Tangkhulic languages

The Tangkhulic and Tangkhul languages are a group of Sino-Tibetan languages spoken mostly in northeastern Manipur, India. Conventionally classified as "Naga", they are not clearly related to other Naga languages, and (with Maringic) are conservatively classified as an independent Tangkhul–Maring branch of Tibeto-Burman, pending further research.
The Maringic languages appear to be closely related to the Tangkhulic family, but not part of it.
Languages.
Tangkhulic languages include:
The Tangkhulic languages are not particularly close to each other.
Brown's "Southern Tangkhul" (=Southern Luhupa??) is a Kuki-Chin rather than Tangkhulic language. It has strong links with the recently discovered Sorbung language, which is also not Tangkhulic despite being spoken by ethnic Tangkhul. some northern villages(Chingjaroi, Jessami,Soraphung Razai)in Tangkhul area have language more closely related to the Angami-pochuri language group. 
Koki, Long Phuri, Makuri, and Para are "Naga" languages spoken in and around Leshi Township, Myanmar. These four languages could possibly classify as Tangkhulic languages or Ao languages.
Classification.
Mortensen (2003:5) classifies the Tangkhulic languages as follows.
Reconstruction.
Proto-Tangkhulic, the reconstructed ancestral proto-language of the Tangkhulic languages, has been reconstructed by Mortensen (2012).
Mortensen (2003:5-7) lists the following phonological innovations (sound changes) from Proto-Tibeto-Burman (PTB) to Proto-Tangkhulic.
Proto-Tangkhulic also has the nominalizing prefix *"kV"-.
Proto-Tangkhulic lexical innovations are: