are, berg, bern, berne, bert, berth, birch, bird, birth, blur, blurred, bur, burg, burke, burke's, burn, burnt, burr, burst, burt, church, churn, clerk, cur, curb, curl, current, curse, curt, curve, dearth, dirge, dirt, durch, durst, earl, earle, earls, earn, earth, er, ernst, ers, fer, fern, fir, firm, firs, first, firth, fleur, flirt, for, freer, fur, germ, gird, girl, girt, girth, heard, hearse, her, herb, herd, hers, hirsch, hurl, hurst, hurt, jerk, ker, kern, kerr, kirk, kurt, learn, learnt, lurch, lurk, mer, merge, mirth, myrrh, nerve, nurse, oeuvre, or, pearl, per, perch, pere, pers, pert, perth, pur, purge, purse, scourge, search, serf, serge, serv, serve, shirk, shirt, sir, skirt, slur, sperm, spur, spurn, spurred, spurs, spurt, stern, sterne, stir, stirred, stirs, sur, sure, surf, surge, swerve, swirl, ter, term, tern, terse, third, thirst, turf, turk, turn, urge, urn, ver, verb, verge, vers, verse, vert, were, wert, whirl, word, work, world, worm, worse, worst, worth, yearn, yer, yours

absurd, adjourn, adverse, affirm, alert, assert, averse, avert, chauffeur, coerce, concern, concert, concur, concurred, concurs, confer, conferred, confers, confirm, conserve, converge, converse, convert, defer, deferred, demur, demurred, desert, deserve, dessert, deter, deterred, disbursed, discern, disperse, disturb, diverge, diverse, divert, emerge, excerpt, exert, immerse, incur, incurred, incurs, inert, infer, inferred, infers, infirm, insert, inter, interred, inverse, invert, messieurs, monsieur, observe, obverse, occur, occurred, occurs, overt, perturbed, perverse, pervert, prefer, preferred, prefers, preserve, reaffirm, reassert, rebirth, recur, recurred, refer, referred, refers, rehearse, research, reserve, return, reverse, revert, submerged, subvert, superb, theaters, theatre, theodor, transfer, transferred, transfers, transverse, traverse, twothirds, unearned, unearthed, unfurled, unheard, unhurt, unnerved, usurp, vespers, wentworth

connoisseur, interspersed, luxembourg, overheard, overseer, overwork, privateer, reimburse, unconcern, undeserved, undisturbed