1 Syllable: S
1, an, ance, been, blunt, brunt, bum, bump, bums, bun, bunch, bund, bunk, chron, chum, chunk, clump, clung, come, conf, cont, crumb, done, donne, drum, drunk, dum, dumb, dump, dun, dung, dunn, duns, flung, from, front, fun, funds, funk, grunt, gum, gun, hm, hum, hummed, hump, hun, hunch, hung, huns, hunt, ian, jump, jun, junk, leant, lump, lunch, lund, lung, ment, monk, month, mum, none, numb, nun, once, one, plum, plumb, plump, plums, plunge, pump, pun, punch, puns, rum, rump, run, rung, runs, scum, shrunk, shun, shunned, sions, slum, slump, slums, slung, slunk, some, son, sponge, sprung, spun, strung, stump, stung, stunned, stunt, sum, summed, sums, sun, sung, sunk, suns, swung, than, thumb, thump, ton, tongue, tons, trump, trunk, tum, tun, tung, um, un, won, wrung, young, young's
2 Syllables: SU
2 Syllables: US
affront, amiens, among, amongst, become, begun, benumbed, bodleian, confront, crimean, defunct, expunged, korean, lyceum, outdone, outrun, plebeian, succumb, therefrom, undone
3 Syllables: SUU
3 Syllables: UUS
4 Syllables: UUSU
Found 160 words across 6 groupings. Skipped 50 excess words of a similar stem.