5 letter words:
frack14,
furca10,
4 letter words:
zack19,
zarf16,
zurf16,
czar15,
fuck13,
cark10,
cauk10,
rack10,
ruck10,
cauf9,
curf9,
raku8,
faur7,
frau7,
3 letter words:
caz14,
cuz14,
kaf10,
ark7,
auk7,
arf6,
auf6,
far6,
fra6,
fur6,
arc5,
car5,
cru5,
cur5,
ruc5,
2 letter words:
za11,
ka6,
fa5,
ar2,
ur2,