Tanchangya language
According to Rupak Debnath Tanchangya retains several features of Tibeto-Burman, viz., dentalisation of palatal and palate-alveolar obstruents, aspiration of word initial [t], substitution of [r] by [j] in the environment of the palatal vowel [i], and occurrence of tone contrasts with changes in laryngeal and supra-laryngeal setting of phonemes.It is not simply due to its earlier usage but it is universally understood by every Tanchangya despite any geographical distribution.According to 'Tanchangya Parichiti' written by Biro Kumar Tanchangya of the words originated from the Indo-Aryan language.In the Tanchangya language it could also find few vocabularies derived from Arabic, Chinese, Japanese, Portuguese, Dutch, Turkish, Persian, French, English, and Hindi.Such an instance can be seen at Dr. Satyakam Phukan's article named "An Analysis of the Ethno-Linguistic Roots and Connections of the Chakma and Tanchangya People".