Taechatder

Consonants
Like some Slavic languages, consonant phonemes except /ð/ and /ʔ/ come in hard–soft pairs. In the orthography, soft consonants are normally marked by the letter y, similar to Hungarian diagraphs ty, gy, ly, ny.

Vowel Harmony
There are two classes of vowels in Taechatder: Opened and Closed.

Vowels of every affix attached before and after stems are determined by the class of vowels in the stems.
 * dancocdero ('of Chinese language') – opened vowels a, e, and o.
 * izícėtu ('of kings') – closed vowels ė, i, í and u.

Palatalization
Paired consonants before e, é, eö, i, í and iü are always soft.

Paired consonants before a vowel which is not e, é, eö, i, í or iü can be either hard or soft. If they are soft, the letter e is inserted between the consonants and the vowel when the vowel is opened and the letter i is inserted when it is closed.