1 Syllable: S
Beck, bed, beg, begged, begs, Bess, best, bet, bled, bless, blest, bread, breast, bred, Brest, cess, check, chef, cheque, chess, chest, cleft, crept, crest, cus, Czech, dead, deaf, debt, Dec, deck, deft, Dept, depth, des, desk, dread, dred, dregs, dress, EB, ebb, ed, eft, egg, ers, ess, esse, etched, f, fetch, flecked, fled, flesh, Fred, fresh, fret, get, Gregg, guess, guest, head, Heft, Hess, Hesse, het, ins, Jeff, jest, jet, keg, kept, las, lead, leaped, leapt, led, left, leg, legged, legs, les, lest, let, Lett, lettre, lex, Med, mesh, mess, met, Metz, neck, Ned, nes, nest, net, next, peck, peg, pep, pest, pet, press, Presse, ques, quest, read, rec, red, ref, reft, Reg, Rep, rest, ret, Rex, s, said, sec, sect, Sep, Sept, Sess, set, sett, sex, shed, shred, sketch, sled, slept, spec, speck, sped, spread, stead, step, stepped, steppes, steps, stress, stretch, sweat, swept, Tech, ted, test, tete, Tex, text, theft, thread, threat, tread, trek, tres, vest, vet, vex, web, Webb, webs, wed, wept, West, West's, wet, whet, wreck, wrest, wretch, X, Yes, yet, zest
2 Syllables: SU
2 Syllables: US
3 Syllables: SUU
3 Syllables: UUS
4 Syllables: UUUS

Found 325 words across 6 groupings. Skipped 119 excess words of a similar stem.