Or search: unbroken
1 Syllable: S
ab, act, ad, adds, ads, aft, aix, app, apt, ask, asp, ast, at, ax, axe, back, bad, bag, bask, basque, bast, bat, beck, bed, beg, begged, begs, best, bet, black, blast, bled, blessed, blest, brag, bread, breast, bred, brest, cab, cad, cap, capped, caps, capt, cask, cast, caste, casts, cat, chap, chat, check, cheque, chest, clad, clap, clapped, clashed, clasp, classed, cleft, crab, crabbed, crabs, crack, craft, crag, crashed, crept, crest, czech, dab, dad, dashed, dat, dead, debt, dec, deck, deft, dept, depth, desk, drab, draft, drag, dragged, drags, draught, dread, dred, dregs, dressed, eb, ebb, ed, eft, egg, etched, ex, fac, fact, fad, fag, fast, fat, fax, fed, fetched, flag, flagged, flags, flap, flapped, flaps, flashed, flask, flat, flax, flecked, fled, fred, fret, gad, gag, gap, gasp, get, glad, gnat, grab, grabbed, graft, grasp, gregg, guessed, guest, hack, had, hadst, hag, hap, hast, hat, hatched, hats, head, heft, het, jack, jacques, jagged, jest, jet, katz, keg, knack, knapp, lab, lac, lack, lad, lag, lagged, lags, lap, lapped, laps, lapse, lashed, last, lat, laughed, lax, lead, leaped, leapt, led, left, leg, legged, legs, lest, let, lett, lettre, lex, mac, mack, mad, mag, mak, map, mapped, maps, mashed, mask, massed, mast, mat, matched, mats, matt, max, med, met, metz, nad, nag, nap, nat, neck, ned, nest, net, next, pack, pact, pad, pap, passed, past, pat, patched, pax, peck, peg, pep, pest, pet, plaid, plaque, plat, platt, prac, pratt, pressed, quack, quest, rack, raft, rag, rap, rapped, rapt, rat, read, rec, red, reft, reg, rep, rest, ret, rex, sac, sachs, sack, sacs, sad, sag, said, sap, sapped, sat, saxe, scat, scrap, scratched, sec, sect, sep, sept, set, sett, sex, shack, shad, shaft, shed, shred, sketched, slab, slack, slag, slap, slapped, slashed, sled, slept, smack, smashed, snack, snap, snapped, snaps, snatched, spat, spec, speck, sped, splashed, spread, stab, stabbed, stabs, stack, staffed, stag, stat, stead, step, stepped, steppes, steps, strap, strapped, straps, stressed, stretched, sweat, swept, tab, tack, tact, tad, taft, tag, tagged, tags, tak, tap, tapped, taps, task, tat, tax, tech, ted, test, tete, tex, text, that, thatched, that's, theft, thrashed, thread, threat, track, tract, trap, trapped, traps, tread, trek, vast, vat, vest, vet, vex, wag, wax, web, webb, webs, wed, wept, west, west's, wet, whet, wrap, wrapped, wraps, wrapt, wreck, wrest, yet, zag, zest
2 Syllables: SU
2 Syllables: US
3 Syllables: SUU
3 Syllables: UUS

Found 568 words across 5 groupings. Skipped 186 excess words of a similar stem.