Phonology
Old Turkic has nine vowel qualities—a, e, ė, i, ï, o, ö, u, ü—distinct only in the first syllable of a word, collapsed into four classes elsewhere—a, e, ï, i.
The consonantal system distinguishes between unvoiced, voiced (with fricative variants) and nasal:
- labial: p, v (β), m;
- dental: t, d (δ), n;
- palatal: č, y, ń;
- velar: k (q, χ), g (γ), ŋ;
- sibilant: s, š, z;
- liquid: r, l.
Read more about this topic: Old Turkic Language