Proto Krūvtah

Consonants
Phonology by Kauf

I tried to make an Old Church Slavonic-esque system, but there's way too many wacky consonants and too few alternatives to represent them :/ Palatalized consinan are sometimes written with a following  whenever they appear in contexts where they are not followed by a long front vowel (particularly word-finally or before a front vowel that was shortened.)

Vowels
There are no diphthongs, only vowel/semivowel combinations.

/i: y: e: ø:/ palatalize any consonant before them and are transformed into /ɨ: u: ɛ: o:/ after retroflex, uvular and glottal consonants.

Any non-palatalized consonant can be labialized, but such a consonant can't be word-final or any part of the cluster.

Phonotactics
Any onset consists of at least one consonant, this being either a plosive or a non-glottal fricative.

Overall, the syllable structure is (C)(C)CV(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 consonant, of any type and PoA.