Eastern Mansi language

Eastern Mansi is an extinct Uralic language spoken in Russia in the Khanty–Mansi Autonomous Okrug around the river Konda. It became extinct in 2018, when its last speaker Maksim Šivtorov (Максим Семенович Шивторов) died. It has Khanty and Siberian Tatar influence. There is vowel harmony, and for it has, frequently diphthongized.

In Russian linguistics the Konda dialect used to be called the "southern Mansi (Kondinsky) dialect" (южно-мансийский (кондинский) диалект ) or "eastern Mansi dialect group" (восточная группа диалектов).

Alphabet
In the few instances that Eastern Mansi literature was printed and was from the native areas, it used an unchanged Russian-Cyrillic script like this:

The highlighted letters are found in loanwords, except нг which is considered as a singular letter in the “Ворыяп хумый” (“Two Hunters”) by P. K. Cheymetov, and г is substituted with the letter й in some dialects

Phonology
Source:

Consonants
Some remarks:
 * 1) Neither in Middle nor Lower Konda do these appear at the beginning of words.
 * 2) In Middle Konda it does not appear in the beginning of words, but in Lower Konda it does.
 * 3) /ŋ/ is also spelled with just н if it comes before к or х. This rule does not include suffixes; like in мынгым /mənɣəm/

Vowels
(KM=Present in Middle Konda | KU=Present in Lower Konda | K=Present in both)

Some remarks:
 * 1) Only present in palatal environments.
 * 2) It has the allophone /iː/.
 * 3) Neither in Middle nor Lower Konda do these appear in non-initial syllable positions.
 * 4) Neither in Middle nor Lower Konda do /aː/ appear in first syllable positions.

Diphthongs
In Middle Konda, the diphthongs are /øæ/ or /øæ̯/ and /oɒ/ found in both first and non-initial syllable positions.

In Lower Konda, the /æø/ diphthong is usually realized as /œ/ which is only found in first syllable positions, while /øæ/ is found in both first and non-initial syllable positions.