Berk
Burk
Burke
Dirk
Kirk
Merc
Turk
berk
berserk
birk
burke
cirque
clerk
derk
dirk
erk
irk
jerk
kirk
lurk
merc
merck
merk
murk
overwork
perc
perk
quirk
rework
sherk
shirk
smirk
turk
werk
work