or nasals are allowed as C₂, except after /s/ (e.g. sp eak, sm all) 6) /s /, /ʃ/ complementary: /s/ does ... behavior of /s/ → /s/+stops clusters: the sonority level drop 6.5.3 Triple onsets Addition of /s/ → ... as C₂, and this can only be preceded by a /s/ in rarely found vocabulary (e.g. sph ere) 5) No stops