Kabardian
Kabardian uses ⟨у⟩ for labialization, as Ӏу /ʔʷ/. гу is /ɡʷ/, though г is /ɣ/); ку is /kʷ/, despite the fact that к is not used outside loan words. Other digraphs are:
- Slavic дж /ɡʲ/, дз /dz/
- Ejectives in ⟨Ӏ⟩: кӀ /kʲʼ/ (but кӀу is /kʷʼ/), лӀ /ɬʼ/, пӀ /pʼ/, тӀ /tʼ/, фӀ /fʼ/, цӀ /tsʼ/, щӀ /ɕʼ/
- Other consonants: гъ /ʁ/, жь /ʑ/, къ /qʼ/, лъ /ɬ/ (from л /ɮ/), хь /ħ/, хъ /χ/
- The trigraph кхъ /q/
Labialized, the trigraph becomes the unusual tetragraph кхъу /qʷ/.
Read more about this topic: Cyrillic Digraphs