Avar
Avar uses ⟨в⟩ for labialization, as in хьв /xʷ/. Other digraphs are:
- Ejective consonants in ⟨Ӏ⟩: кӀ /kʼ/, цӀ /tsʼ/, чӀ /tʃʼ/
- Other consonants based on к /k/: къ /qʼː/, кь /tɬʼː/,
- Based on г /ɡ/: гъ /ʁ/, гь /h/, гӀ /ʕ/
- Based on л /l/: лъ /tɬː/
- Based on х /χ/: хъ /qː/, хь /x/, хӀ /ħ/
The ь digraphs are spelled this way even before vowels, as in гьабуна /habuna/ "made", not *гябуна.
- Gemination: кк /kː/, кӀкӀ /kʼː/, хх /χː/, цц /tsː/, цӀцӀ /tsʼː/, чӀчӀ /tʃʼː/.
Note that three of these are tetragraphs. However, gemination for the 'strong' consonants in Avar orthography is sporadic, and the simple letters or digraphs are frequently used in their place.
Read more about this topic: Cyrillic Digraphs