6 letter words:
uncuff14,
5 letter words:
frank12,
crank11,
franc10,
knaur9,
furan8,
4 letter words:
fuck13,
caff12,
cuff12,
funk11,
cark10,
naff10,
rack10,
raff10,
ruck10,
ruff10,
curf9,
karn8,
knar8,
knur8,
kuna8,
kuru8,
nark8,
raku8,
rank8,
faun7,
carn6,
curn6,
narc6,
unau4,
3 letter words:
kaf10,
aff9,
ark7,
auk7,
arf6,
fan6,
far6,
fun6,
fur6,
arc5,
can5,
car5,
cru5,
cur5,
ran3,
run3,
urn3,
2 letter words:
ka6,
fa5,
an2,
ar2,
na2,
nu2,
un2,