1 Syllable: S
4, arc, arch, arcs, ard, are, ark, arm, armes, arms, art, bar, barb, bard, barge, bark, barn, barnes, barns, barr, barre, bars, bart, boar, boards, boars, boer, bore, born, borne, bourne, car, cards, carl, carp, carr, cars, cart, carte, carts, carve, char, charge, charles, charm, charred, chart, chord, chore, clark, clarke, clarke's, clark's, coarse, cor, cords, core, cork, corn, corp, corpse, cours, course, court, czar, dar, dark, darn, dart, door, dor, dore, drawer, dwarf, far, farce, farm, fart, floor, for, forbes, force, ford, fore, forge, fork, form, forme, forms, fort, forte, forth, forts, four, fourths, gar, garb, gard, garde, george, gnarled, gore, gorge, gourd, guard, har, hark, harm, harp, harsh, hart, heart, hearth, hearts, hoar, hoards, hoarse, horde, horn, hors, horse, jar, jarred, jars, karl, lar, larch, lard, large, lark, lor, lords, lore, lorn, mar, marc, march, marche, mark, marl, marred, mars, marsh, mart, marx, moore, moore's, mor, more, morn, morse, mort, mourn, nor, norm, norse, north, oar, or, orb, ord, ore, org, orr, ort, our, par, parched, park, parke, parks, parr, pars, part, parte, parts, por, porch, pore, pork, port, porte, ports, pour, quart, quartz, roar, r's, sar, scar, scarf, scarred, scars, schwartz, scorched, score, scorn, shark, sharp, sharpe, shore, shorn, short, smart, snarl, snort, soar, sor, sore, sort, source, spar, spark, spars, sparse, spores, sport, star, starch, stark, starr, stars, start, starve, store, stork, storm, stuart, sward, swarm, sword, swore, sworn, tar, tarn, tarred, tart, thor, thorn, thorpe, thwart, tor, torch, tore, torn, torre, tort, tours, toward, voir, war, wards, warm, warn, warp, wars, wart, wharf, whore, wore, worn, yard, yarn, yore, york, york's, your
2 Syllables: SU
2 Syllables: US
3 Syllables: SUU
3 Syllables: UUS
4 Syllables: UUUS

Found 386 words across 6 groupings. Skipped 178 excess words of a similar stem.