Сколько слов можно составить из слова stomach-ache

Очень много: ace, act, at, ahem, as, ascot, sea, ate, coat, come, comet, cacao, cache, cachet, came, cameo, case, cash, cast, cat, catch, chaos, chasm, chat, chaste, cheat, chest, chose, coast, coma, cosh, cost, cot, cote, each, eat, east, echo, ham, hat, haste, hatch, hate, heat, match, moat, macho, mama, mast, mate, mash, mase, math, me, meat, mesh, met, moth, moot, most, mote, oast, oat, oath, sachet, same, sat, sate, scam, scat, seat, seam, set, seta, shame, she, shoe, shot, some и другие.