Kangxi #17

凵 container

7 characters written with the default form 凵 — container radical (Kangxi #17, kǎn).

orange strokes = the radical inside the character whole character indigo = filed under this radical by convention

出 chū HSK 1 #105

to go out / to come out / to produce / to appear

to hit; to strike / to attack

凶 xiōng HSK 6 #2,986

fierce; ferocious; violent / terrible; fearsome / inauspicious; ominous

凹 āo HSK 7-9 #11,493

concave; sunken; dented

凿 záo HSK 7-9 #16,307

to chisel / to bore / to dig

函 hán #17,690

letter; correspondence / envelope; case / function (math)

凸 tū HSK 7-9 #19,129

protruding / convex / raised