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French linguist and Sinologist Laurent Sagart considers the Austronesian languages to be related to the Sino-Tibetan languages, and also groups the Tai–Kadai languages as more closely related to the Malayo-Polynesian languages.
The missionary, orientalist and linguist Heinrich August Jäschke (1817–1883) classified Balti as one of the westernmost Tibetan dialects.
Choca-ngaca or Chocangacakha (Dzongkha: ཁྱོད་ཅ་ང་ཅ་ཁ་; Wylie: Khyod-ca-nga-ca-kha; also called "Kursmadkha," "Maphekha," "Rtsamangpa'ikha," and "Tsagkaglingpa'ikha") or Tsamang is a Southern Tibetan language spoken by about 20,000 people in the Kurichu Valley of Lhuntse and Mongar Districts in eastern Bhutan.
A number of language groups in Arunachal Pradesh traditionally considered to be Sino-Tibetan (Tibeto-Burman) may in fact constitute independent language families or isolates (Roger Blench 2011).
Among the foreign languages known by him were: English, Mandarin, Tibetan, Russian, Mongolian, Burmese.