Ryukyuan languages
Ryukyuan languages often share many phonological features with Japanese, including a voicing opposition for obstruents, CV(C) syllable structure, moraic rhythm, and pitch accent. However, many individual Ryukyuan languages diverge significantly from this pan-Japonic base. For instance, Ōgami does not have phonemic voicing in obstruents, allows CCVC syllables, and has unusual syllabic consonants such as "make".