usurp, hurt, lurk, church, turf, purse,
curb, curd, urge, curve, furze,
turn, curl, spur, occurred,
burnt, burst, murder, further,...;
shirt, irk, birch, birth, bird, dirge,
firm, girl, fir, stirred, first, circus, virtue,..;
myrrh, myrtle, Byrne;
twerp, assert, jerk, perch, serf, berth, terse,
verb, erg, emerge, nerve,
term, stern, deter, err,¹ preferred,
certain, person, immersion, emergency, kernel,...;
Earp, earth, dearth, hearse, rehearse, search,
heard, earn, yearn, earl, pearl,
rehearsal, early, earnest;
wort, work, worth, worse, word, worm, whorl,
worst, Worthing, worthy, whortleberry;
scourge, adjourn, courteous,² journal, journalist, journey;
attorney, colonel, liqueur, ³ masseur,³ connoisseur.³
¹ occasionally with the vowel of DRESS.
² occasionally with the vowel of FORCE.
³ sometimes with the vowel of CURE.