Proto Krūvtah

Consonants
Phonology by Kauf

The challenge is over and dead I can use my own phonology yessssssss

Cyrillic alphabet because why not
 * 1) allophone of [r] before obstruents and [j]: <търд> [tɤʐd], <рѥм> [ʐɛ:m]

Vowels
There are no diphthongs, only vowel/semivowel combinations. The second form of each vowel is how they combine with [j] (note this orthography is merely to keep in line with Cyrillic tradition, it does not mark palatalization in the usual sense)

Vowel phonemes come in short-long pairs that contrast qualitatively (и-ь, е-э, ы-а, у-ъ, о-а), note that both ы and o alternate with a.

Stress is mobile & phonemic, similar to Eastern Slavic languages.

Phonotactics
Any onset consists of at least one consonant of any type.

Overall, the syllable structure is (C)(C)CV(C)(C). Three-consonant onsets consist of either two plosives and a liquid or a fricative, plosive, and a liquid. Two-consonant onsets can consist of any two consonants of any type, but these can't be of the same type and PoA.

A coda can consist of any two consonants, but these can't be of the same type and PoA.