List as many four letter words you can get from the word characteristics?

aahs, aces, ache, acre, acta, acts, airs, airt, aits, arch, arcs, area, ares, aria, arts, asci, asea, ates, caca, care, cars, cart, casa, case, cash, cast, cate, cats, ceca, cess, char, chat, chia, chic, chis, chit, cire, cist, cite, cris, each, ears, east, eath, eats, eras, errs, erst, etas, etch, eths, etic, haar, haes, haet, hair, hare, hart, hast, hate, hats, hear, heat, heir, hers, hest, hets, hies, hire, hiss, hist, hits, ices, ichs, ires, iris, itch, race, raia, rare, rase, rash, rate, rath, rats, rear, recs, reis, resh, rest, rets, rhea, rias, rice, rich, rise, rite, sacs, sari, sash, sate, sati, scar, scat, sear, seas, seat, secs, sect, seis, sera, sers, seta, sets, sett, shea, shes, shri, sice, sics, sire, sirs, site, sith, sits, sris, star, stat, stet, stir, tace, tach, tact, tahr, tare, tars, tart, tass, tate, tats, tear, teas, teat, test, teth, tets, thae, that, thir, this, tics, tier, ties, tire, titi, tits, tret, tsar