Proto-Tibeto-Burman language

Proto-Tibeto-Burman (commonly abbreviated PTB) is the reconstructed ancestor of the Tibeto-Burman languages, that is, the Sino-Tibetan languages except for Chinese. An initial reconstruction was produced by Paul K. Benedict and since refined by James Matisoff. Several other researchers argue that the Tibeto-Burman languages sans Chinese do not constitute a monophyletic group within Sino-Tibetan, and therefore that Proto-Tibeto-Burman was the same language as Proto-Sino-Tibetan.

Proto-Tibeto-Burman
PTB
(may be equivalent to Proto-Sino-Tibetan)
Reconstruction ofTibeto-Burman languages
Lower-order reconstructions

Issues

Reconstruction is complicated by the immense diversity of the languages, many of which are poorly described, the lack of inflection in most of the languages, and millennia of intense contact with other Sino-Tibetan languages and languages of other families. Only a few subgroups, such as Lolo-Burmese, have been securely reconstructed. Benedict's method, which he dubbed "teleo-reconstruction", was to compare widely separated languages, with a particular emphasis on Classical Tibetan, Jingpho, Written Burmese, Garo, and Mizo.[1] Although the initial consonants of cognates tend to have the same place and manner of articulation, voicing and aspiration is often unpredictable.[2] Matisoff attributes this to the effects of prefixes that have been lost and are often unrecoverable.[3] The reconstruction also features "allofams", variant forms of a root postulated to explain inconsistent reflexes in daughter languages.[4] The reconstruction of such "allofams" has been heavily criticized by other researchers in the field.[5]

Homeland

Contrary to other hypotheses suggesting a Proto-Sino-Tibetan homeland in the Yellow River valley of northern China,[6] Matisoff (1991,[7] 2015) suggests that the Proto-Sino-Tibetan (PST) homeland was located "somewhere on the Himalayan plateau," and gives Proto-Tibeto-Burman a date of approximately perhaps around 4000 B.C., which is roughly on par with the age of Proto-Indo-European. Language diversification occurred as speakers then moved downstream through various river valleys.[8]

Phonology

The phonology of Proto-Tibeto-Burman here is from Matisoff's 2003 reconstruction, much of which is based on Benedict's earlier reconstructions.

Consonants

Proto-Tibetan–Burman has at least 23 consonants (Matisoff 2003:15). Some descendants of Proto-Tibetan–Burman, especially the Qiangic languages, have developed dozens of sibilant fricatives and affricates.

Proto-Tibeto-Burman Consonants
Labial Alveolar Palatalized
alveolar		 Palatal Velar Glottal
Voiceless stop p t k
Voiced stop b d g
Nasal m n ŋ
Fricative s, z ś, ź h
Affricate t͡s, d͡z t͡ś, d͡ź
Lateral l
Tap or trill ɾ, r
Approximant w j

Proto-Tibeto-Burman in Matisoff's opinion also has many final nasals, stops, and liquids.

Vowels

In Matisoff's reconstruction Proto-Tibeto-Burman vowels can be split into primary and secondary sets. Modern-day Tibeto-Burman languages have anywhere from five vowels (Written Tibetan and Jingpho) to dozens of monophthongs and diphthongs (Loloish and Qiangic languages) (Matisoff 2003:157). Matisoff (2003) also notes that languages which have greatly simplified or eliminated final consonants tend to have more vowels. The open front unrounded vowel *a is by far the most common and stable vowel in Tibeto-Burman languages.

Matisoff (2003) reinterprets diphthongs from Paul Benedict's reconstruction as long vowels.

Proto-Tibeto-Burman Primary Vowels
Height Front Central Back
Close ī (iy, əy) ū (uw, əw)
Mid ē (ey) (-ə) ō (ow)
Open a
ay aw
āy āw
Proto-Tibeto-Burman Secondary Vowels
Height Front Back
Close ī ū
Mid ē ō

Preservation of stops

According to Matisoff Sino-Tibetan languages go through a series of four stages in which final stops and nasals gradually decay (Matisoff 2003:238-239).

  1. The six final stops and nasals, *-p, *-t, *-k, *-m, *-n, *-ŋ, are all intact. Written Tibetan, Lepcha, Kanauri, Garo, and Cantonese are currently in this stage.
  2. One or more final consonants have been reduced or dropped. In Jingpho and Nung, the velars (*-k) are replaced by glottal stops (-ʔ), while in other languages they are completely dropped. In Mandarin Chinese, all final stops are dropped, and *-m has merged with *-n.
  3. All finals stops become glottal stops or constrictions (such as creaky voices), and final nasals may be replaced by nasality in the preceding consonant. Languages currently in this stage include modern Burmese and Lahu.
  4. There are no glottal or nasal traces of former final consonants left in the syllables.

Syntax

Proto-Tibeto-Burman was a verb-final (subject–object–verb or SOV) language.

Most modern-day Tibeto-Burman branches also display SOV word order. However, due to syntactic convergence within the Mainland Southeast Asia linguistic area, three Tibeto-Burman branches, Karenic, Mruic, and Bai, display SVO (verb-medial) word order. This syntactic realignment has also occurred in Sinitic, which Scott DeLancey (2011) argues to be a result of creolization through intensive language contact and multilingualism during the Zhou Dynasty.[9]

Morphology

Syllable structure

According to James Matisoff, Proto-Tibeto-Burman syllables typically consist of the following structure (Matisoff 2003:11-13).

(P2) — (P1) — Ci — (G) — V(:) — Cf — (s)

  • P1: first prefix - optional
  • P2: second prefix - optional
  • Ci: initial consonant
  • G: glide - optional
  • V: vowel (optionally lengthened)
  • Cf: final consonant
  • s: suffix - optional

The following types of changes in syllable structure have been attested in Tibeto-Burman languages (Matisoff 2003:155). (Note: Sesquisyllable, otherwise known as a minor syllable, is a word coined by James Matisoff meaning "one-and-a-half syllables.")

  • disyllable
    • disyllable → sesquisyllable
    • disyllable → complex monosyllable
    • disyllable → simple monosyllable
  • sesquisyllable
    • sesquisyllable → disyllable
    • sesquisyllable → complex monosyllable
    • sesquisyllable → simple monosyllable
  • complex monosyllable
    • complex monosyllable → sesquisyllable
    • complex monosyllable → simple monosyllable
  • simple monosyllable
    • simple monosyllable → disyllable

Below are the sources of the syllable changes (i.e., reversal of the list above).

  • disyllable
    • from sesquisyllable
    • from simple monosyllable
  • sesquisyllable
    • from disyllable
    • from complex monosyllable
  • complex monosyllable
    • from disyllable
    • from sesquisyllable
  • simple monosyllable
    • from disyllable
    • from sesquisyllable
    • from complex monosyllable

However, Roger Blench (2019) argues that Proto-Sino-Tibetan did not have sesquisyllabic structure; instead, sesquisyllabicity in present-day Sino-Tibetan branches had been borrowed from Austroasiatic languages due to typological convergence.[10]

Verbs

According to many authors such as James Bauman, George van Driem and Scott DeLancey, a system of verbal agreement should be reconstructed for proto-Tibeto-Burman. Verbal agreement has disappeared in Chinese, Tibetan, Lolo-Burmese and most other branches, but was preserved in Kiranti languages in particular. This is a topic of scholarly debate, however, and the existence of a PTB verbal agreement system is disputed by such authors as Randy LaPolla.[11]

Prefixes

Matisoff postulates the following derivational prefixes.

  • *s- — This prefix is used for the directive, causative, or intensive. It also appears in words for animals and body parts.
  • *ʔa- / *(ʔ)ə / *ʔə̃ / *ʔaŋ / *ʔak — This glottal prefix is used for kinship functions and the third person possessive.
  • *m- — Before verb roots, this prefix signifies inner-directed states or actions, such as stativity, intrasitivity, durativity, and reflexivity. Before noun roots, it is used as a third person possessive prefix.
  • *r- — Before verbs, this prefix is used as a "directive." It is also used before a wide variety of semantically unrelated noun roots.
  • *b- — This prefix is often used before transitive verbs, and usually marks the past (with suffix *-s, creating a *b- -s circumfix) and future (with a null suffix).
  • *g- — This velar prefix has a third person pronominal function before noun roots. It is also used before a wide variety of semantically unrelated noun roots. Before verb roots, it is used for the present and future tenses. In Proto-Lolo–Burmese, the unvoiced velar prefix *k- is used commonly used before animal names.

Other constructed prefixes include *l- and *d-.

Circumfixes

Circumfixes have also been reconstructed for Proto-Tibeto-Burman.

In Written Tibetan, s- -n and s- -d are collective circumfixes used in kinship terms (Matisoff 2003:453).

Suffixes

According to Matisoff three Proto-Tibeto-Burman dental suffixes, *-n, *-t, and *-s, are highly widespread, but their semantics are difficult to reconstruct (Matisoff 2003:439). The suffixes *-s, *-h, and *-ʔ are often developed into tones in many Tibeto-Burman languages, and are thus highly "tonogenetically potent" (Matisoff 2003:474).

  • *-n – This suffix has a variety of functions, including nominalizing, transitivizing, and collectivizing (or pluralizing). The nominalizing function is attested in Lepcha as -m or -n and in Written Tibetan as -n. The transitivizing form is rare, and has only been attested in Kanauri. Finally, the collectivizing/pluralizing function is found not only in many modern-day Tibeto-Burman languages, but also in Old Chinese as well.
  • *-t – This suffix is used as a nominalizer. It occurs in Jingpho as -t and Written Tibetan as -d. Other functions include verbalizing noun roots and making intransitive or stative verbs into transitive or causative ones (Matisoff 2003:457). In other cases, *-t appears to have no obvious function. The *-t suffix also occurs in Old Chinese, but its semantic function is unclear.
  • *-s – Not easily distinguishable from *-t, this proto-suffix is preserved in written Tibetan, West Himalayish languages, Chepang, Kukish languages (as -ʔ) and some Qiangic languages. It can serve as a nominalizer (Qiang and Tibetan), locative, subordinator (Kukish languages), a stative, inner-directed, or "middle" meaning (Himalayish languages such as Kanauri), and causative (Kiranti and Kukish languages).
  • *-k – This velar suffix occurs in the Kukish languages and also in Old Chinese. Its semantic function is still unknown. However, Pulleyblank assigns a distributive sense to the *-k suffix, but only in relation to pronominal forms (LaPolla 2003:26).
  • *ʔay – This proto-morpheme means "to go", and can be attached to various roots as a palatal suffix to signify motion away from the deictic center. This fully syllabic proto-morpheme has now been grammaticalized and reduced to palatal offglides in modern-day Tibeto-Burman languages.
  • *ya / *za / *tsa / *dza – Meaning "child" or "little one", this proto-morpheme appears in Tibeto-Burman languages as a palatal suffix (-j), and has also been reconstructed in several ways. Its purpose is mainly diminutive. Matisoff (2003) also notes that high front vowels tend to be used for diminutive functions.
  • *-way / *-ray – This proto-copula can also appear as a palatal suffix (-j) and occurs in roots carrying abstract grammatical meanings, such as articles, pronouns, and deictics (Matisoff 2003:487).

Vocabulary

Among other researchers, Paul K. Benedict and James Matisoff have proposed reconstructed vocabulary items for Proto-Tibeto-Burman. Matisoff's Proto-Tibeto-Burman reconstruction is by far the most cited, and with his last version published in the final release of the Sino-Tibetan Etymological Dictionary and Thesaurus (2015).[12][13] Allofams (a term coined by Matisoff to mean alternate proto-forms) are marked using ⪤.

Stable roots

Matisoff (2009)[14] lists 47 stable Tibeto-Burman roots (i.e., etyma that have cognates widely distributed in branches throughout the family) and their Proto-Tibeto-Burman reconstructions.

  • Body parts (10 words): blood; bone; ear; eye; hair (body)/fur/feather; hand; nose; tail; tongue; tooth
  • Animals (5 words): animal; dog; fish; pig; snake
  • Numerals (6 words): three; four; five; six; eight; hundred
  • Natural objects and units of time (5 words): day (of 24 hours); fire; moon; smoke; sun/daytime
  • People and habitation (6 words): child/son; grandfather/elder brother; house; husband/male; man/person; name
  • Plants and ingestibles (2 words): medicine/juice/paint; poison
  • Pronouns (2 words): I (1st person); thou (2nd person)
  • Verbs (8 words): bitter; die; dream; eat; ill; kill; lick; steal
  • Abstract (3 words): copula; negative; negative imperative
Body parts
  • *s-hywəy 'blood' (STEDT #230)
  • *s-rus ⪤ *m-rus ⪤ *g-rus 'bone' (STEDT #232)
  • *r-na 'ear' (STEDT #811)
  • *s-mik ⪤ *s-myak 'eye' (STEDT #33)
  • *mil ⪤ *mul 'hair (body)/fur/feather' (STEDT #363)
  • *l(y)ak ⪤ *dyak; [*k(r)ut] 'hand' (STEDT #377; #712)
  • *may ⪤ *mey ⪤ *mi 'tail' (STEDT #1288)
  • *l(y)a ⪤ *lay ⪤ *ley 'tongue' (STEDT #621)
  • *g-na 'nose' (STEDT #803)
  • *swa; [*džway] 'tooth' (STEDT #632; #635)
Animals
  • *sya-n 'animal/meat/flesh' (STEDT #5711, 34)
  • *kʷəy 'dog' (STEDT #1764)
  • *ŋ(y)a 'fish' (STEDT #1455)
  • *pʷak 'pig' (STEDT #1006)
  • *s-b-ruːl 'snake/vermin' (STEDT #2623)
Numerals
  • *g-sum 'three' (STEDT #2666)
  • *b-ləy 'four' (STEDT #2409)
  • *b-ŋa ⪤ *l-ŋa 'five' (STEDT #2623)
  • *d-k-ruk 'six' (STEDT #2621)
  • *b-r-gyat ⪤ *b-g-ryat 'eight' (STEDT #2259)
  • *b-r-gya 'hundred' (STEDT #2258)
Natural objects and units of time
  • *r(y)ak 'day (24 hours)/spend the night' (STEDT #2636)
  • *mey; [*bar ⪤ *par] 'fire' (STEDT #2136; #2152)
  • *s-la ⪤ *g-la 'moon/month' (STEDT #1016)
  • *kəw ⪤ *kun ⪤ *kut 'smoke' (STEDT #2361)
  • *nəy 'sun/daytime' (STEDT #85)
People and habitation
  • *tsa ⪤ *za 'child/son' (STEDT #2727)
  • *bəw ⪤ *pəw 'grandfather/elder brother' (STEDT #2582)
  • *k-yim ⪤ *k-yum 'house' (STEDT #1612)
  • *pʷa 'husband/male' (STEDT #1612)
  • *r-mi(y) 'human/person' (STEDT #1002)
  • *r-miŋ; [*s-braŋ] 'name' (STEDT #2450; #2169)
Plants and ingestibles
  • *tsəy; [*s-man] 'medicine/paint/juice' (STEDT #5427; #5434)
  • *duk ⪤ *tuk 'poison' (STEDT #2530)
Pronouns
  • *ŋa-y; [*ka-y] '1st person' (STEDT #2530)
  • *naŋ ⪤ *na '2nd person' (STEDT #2489)
Verbs
  • *ka-n 'bitter' (STEDT #229)
  • *səy 'die' (STEDT #27)
  • *r-maŋ 'dream' (STEDT #126)
  • *dzya 'eat' (STEDT #36)
  • *na ⪤ *nan ⪤ *nat 'ill' (STEDT #160)
  • *g-sat 'kill' (STEDT #1018)
  • *m-lyak; *s-lyam 'lick/tongue' (STEDT #629)
  • *r-kəw 'steal' (STEDT #2365)
Abstract
  • *way ⪤ *ray 'copula' (STEDT #1821)
  • *ma 'negative' (STEDT #2436)
  • *ta ⪤ *da 'negative imperative' (STEDT #2681)

Reconstructed branches

Proto-language reconstructions for Tibeto-Burman branches include:

See also

References
  1. Handel (2008), p. 434.
  2. Handel (2008), pp. 425–426.
  3. Matisoff (2003), p. 16.
  4. Matisoff (2003), pp. 3, 16.
  5. Fellner, Hannes and Hill, Nathan W. (2019) 'Word families, allofams, and the comparative method'. Cahiers de Linguistique Asie Orientale, (48) 2, pp 91-124.
  6. Sagart, Laurent; Jacques, Guillaume; Lai, Yunfan; Ryder, Robin; Thouzeau, Valentin; Greenhill, Simon J.; List, Johann-Mattis (2019), "Dated language phylogenies shed light on the history of Sino-Tibetan", Proceedings of the National Academy of Sciences of the United States of America, 116 (21): 10317–10322, doi:10.1073/pnas.1817972116, PMC 6534992, PMID 31061123.
  7. Matisoff, James A. (1991), "Sino-Tibetan Linguistics: Present State and Future Prospects", Annual Review of Anthropology, 20: 469–504, doi:10.1146/annurev.anthro.20.1.469, JSTOR 2155809.
  8. Matisoff, James A. 2015. The Sino-Tibetan Language Family: Description of the Sino-Tibetan Language Family. The Sino-Tibetan Etymological Dictionary and Thesaurus.
  9. DeLancey, Scott. 2011. "On the Origins of Sinitic." Proceedings of the 23rd North American Conference on Chinese Lingusitics (NACCL-23), 2011. Volume 1, edited by Zhuo Jing-Schmidt, University of Oregon, Eugene. Pages 51-64.
  10. Blench, Roger. 2019. If sesquisyllabic structures in Sino-Tibetan (Trans-Himalayan) are a result of contact then existing reconstructions are compromised.
  11. LaPolla, Randy J. (1992). "On the Dating and Nature of Verb Agreement in Tibeto-Burman" (PDF). Bulletin of the School of Oriental and African Studies. 55 (2): 298–315. doi:10.1017/s0041977x00004638. JSTOR 619625.
  12. Matisoff, James A. 2015. The Sino-Tibetan Etymological Dictionary and Thesaurus. Berkeley: University of California. (PDF)
  13. Bruhn, Daniel; Lowe, John; Mortensen, David; Yu, Dominic (2015). Sino-Tibetan Etymological Dictionary and Thesaurus Database Software. Software, UC Berkeley Dash. doi:10.6078/D1159Q
  14. Matisoff, James A (2009). "Stable Roots in Sino-Tibetan/Tibeto-Burman". Senri Ethnological Studies. 75: 291–318. doi:10.15021/00002570.
  15. Mazaudon, Martine. 1994. Problèmes de comparatisme et de reconstruction dans quelques langues de la famille tibéto-birmane. Thèse d'Etat, Université de la Sorbonne Nouvelle.
  16. Tournadre, Nicolas. 2014. "The Tibetic languages and their classification." In Trans-Himalayan linguistics, historical and descriptive linguistics of the Himalayan area. Berlin: Mouton de Gruyter.
  17. Backstrom, Peter C. 1994. A phonological reconstruction of Proto-Western Tibetan. M.A. dissertation. Arlington, TX: University of Texas, Arlington.
  18. Michailovsky, Boyd. 1991. Big black notebook of Kiranti, proto-Kiranti forms. (unpublished ms. contributed to STEDT).
  19. Opgenort, Jean Robert (2011). "A note on Tilung and its position within Kiranti". Himalayan Linguistics. 10 (1): 253–271.
  20. Jacques, Guillaume (2017). "A reconstruction of Proto-Kiranti verb roots". Folia Linguistica Historica. 38: 177–215. doi:10.1515/flih-2017-0007.
  21. Widmer, Manuel. 2014. "A tentative classification of West Himalayish." In A descriptive grammar of Bunan, 33-56. Bern: University of Bern.
  22. Widmer, Manuel. 2017. The linguistic prehistory of the western Himalayas: endangered minority languages as a window to the past. Presented at Panel on Endangered Languages and Historical Linguistics, 23rd International Conference on Historical Linguistics (ICHL 23), San Antonio, Texas.
  23. Schorer, Nicolas. 2016. The Dura Language: Grammar and Phylogeny. Leiden: Brill.
  24. Watters, David E. 2002. A grammar of Kham, Cambridge grammatical descriptions. Cambridge: Cambridge University Press. ISBN 0-521-81245-3
  25. Post, Mark W. and Roger Blench (2011). "Siangic: A new language phylum in North East India", 6th International Conference of the North East India Linguistics Society, Tezpur University, Assam, India, Jan 31 – Feb 2.
  26. Lieberherr, Ismael. 2015. A progress report on the historical phonology and affiliation of Puroik. North East Indian Linguistics (NEIL), 7. Canberra, Australian National University: Asia-Pacific Linguistics Open Access.
  27. Bodt, Timotheus Adrianus; Lieberherr, Ismael (2015). "First notes on the phonology and classification of the Bangru language of India". Linguistics of the Tibeto-Burman Area. 38 (1): 66–123. doi:10.1075/ltba.38.1.03bod.
  28. Sun, Tianshin Jackson. 1993. A Historical–Comparative Study of the Tani (Mirish) Branch in Tibeto-Burman. Berkeley, University of California Ph.D. dissertation.
  29. Hyslop, Gwendolyn. 2014. "A preliminary reconstruction of East Bodish." In Nathan Hill and Thomas Owen-Smith (eds.), Trans-Himalayan Linguistics, 155-179. Berlin: Mouton de Gruyter.
  30. Bruhn, Daniel Wayne. 2014. A Phonological Reconstruction of Proto-Central Naga. Ph.D. dissertation. University of California, Berkeley.
  31. Mortensen, David R. 2012. Database of Tangkhulic Languages. (unpublished ms. contributed to STEDT).
  32. VanBik, Kenneth. 2009. Proto-Kuki-Chin: A Reconstructed Ancestor of the Kuki-Chin Languages. STEDT Monograph 8. ISBN 0-944613-47-0.
  33. Joseph, U.V.; and Burling, Robbins. 2006. Comparative phonology of the Boro Garo languages. Mysore: Central Institute of Indian Languages Publication.
  34. Wood, Daniel Cody. 2008. An Initial Reconstruction of Proto-Boro-Garo. M.A. Thesis, University of Oregon.
  35. French, Walter T. 1983. Northern Naga: A Tibeto-Burman mesolanguage. Ph.D. Dissertation, The City University of New York.
  36. Huziwara, Keisuke (2012). "Toward a reconstruction of Proto-Luish". Kyoto University Linguistic Research. 31: 25–131. doi:10.14989/182194.
  37. Matisoff, James A (2013). "Re-examining the genetic position of Jingpho: putting flesh on the bones of the Jingpho/Luish relationship". Linguistics of the Tibeto-Burman Area. 36 (2): 1–106.
  38. Jones, Robert B., Jr. 1961. Karen linguistic studies: Description, comparison, and texts. (University of California Publications in Linguistics #25.) Berkeley and Los Angeles: University of California Press.
  39. Luangthongkum, Theraphan. 2013. A view on Proto-Karen phonology and lexicon. (unpublished ms. contributed to STEDT).
  40. Luangthongkum, Theraphan. 2014. Karenic As A Branch of Tibeto-Burman: More Evidence From Proto-Karen. Paper presented at the 24th Annual Meeting of the Southeast Asian Linguistics Society (SEALS 24), Yangon, Burma.
  41. Sims, Nathaniel. 2017. The suprasegmental phonology of proto-Rma (Qiang) in comparative perspective. Presented at the 50th International Conference on Sino-Tibetan Languages and Linguistics, Beijing, China.
  42. Yu, Dominic. 2012. Proto-Ersuic. Ph.D. dissertation. Berkeley: University of California, Berkeley, Department of Linguistics.
  43. Jacques, Guillaume; Michaud, Alexis (2011). "Approaching the historical phonology of three highly eroded Sino-Tibetan languages: Naxi, Na and Laze". Diachronica. 28: 468–498.
  44. Bradley, David. 1979. Proto-Loloish. London: Curzon Press. ISBN 978-0-7007-0128-5.
  45. Wang, Feng (2006). Comparison of languages in contact: the distillation method and the case of Bai. Language and Linguistics Monograph Series B: Frontiers in Linguistics III. Taipei: Institute of Linguistics, Academia Sinica. ISBN 986-00-5228-X.
  46. Zhou, Yulou. 2020. Proto-Bizic: A Study of Tujia Historical Phonology. B.A. honors thesis, Stanford University.

Book reviews

Further reading
Data sets
  • Johann-Mattis List. (2019, March 1). Sino-Tibetan Database of Lexical Cognates (Version v1.1.0). Zenodo. doi:10.5281/zenodo.2581321
  • Johann-Mattis List, Robert Forkel, & Tiago Tresoldi. (2019). lexibank/suntb: Tibeto-Burman Phonology and Lexicon (Version v3.0) [Data set]. Zenodo. doi:10.5281/zenodo.3535008
  • Tiago Tresoldi, Johann-Mattis List, & Robert Forkel. (2019). lexibank/satterthwaitetb: Phylogenetic Inference of the Tibeto-Burman Languages (Version v3.0) [Data set]. Zenodo. doi:10.5281/zenodo.3535000
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