Ahise

General information
This conlang is for the August Challenge. (It's essentially what was planned to be some form of Proto-Koz, whatever)

Phonology
I'm lazy to format the tables with.

Consonants
/h/ occurs as allophone of /χ/ and /x/ between back vowels. Labialized consonants are indicated by "w".

Vowels
Long vowels are indicated with a macron.

There are 12 diphthongs, every vowel with /ɪ/ (i.e. /eɪ/, /oɪ/, etc); indicated with i after the vowel (ei, oi), /aʊ/ (au), /oʊ/ (ou), /eʊ/ (eu).

Phonotactics
Consonant clusters include maximum 2 consonants of different places of articulation, ie two plosives can be in a row, but one requires to be e.g. velar and the second e.g. alveolar.

Altering of sounds
Nasals:

Nasals become voiceless before voiceless consonants in complimentary distribution, qabamtei "we could do this a long time ago" is mainly pronounced /'qa.ba.m̥te/

Plosives:

All plosives agree in voicing with their successor consonants. More to be done >_>

Nouns
(More to be done)

The vowel declension is basically the same as consonant declension, with some minor differences.

Words ending in u and o just replace the final u/o with w and take the consonant declension and words ending with i replace the final i with y (and take the consonant declension).

Both declensions take -le ending when counting, i.e. ö čēkle, qu čēkle, etc.

Verbs
Explained with the stem qaba-.

Personal endings
If two same consonants occur in a row it's simply replaced by a single consonant, like *qabatte - qabate. If voiceless consonant and then its unvoiced counterpart (and vice versa) occur it's replaced by a long unvoiced consonant, like *qabadte - qabatte.

Other constructions
Hortative: Passive mood is indicated by -ti at the end of the verb phrase.

Pronoun subjects: