4 letter words:
fuck13,
fank11,
funk11,
cauk10,
conk10,
nock10,
cauf9,
conf9,
kaon8,
koan8,
kuna8,
fano7,
faun7,
unco6,
3 letter words:
kaf10,
auk7,
koa7,
kon7,
oak7,
oka7,
ouk7,
auf6,
fan6,
fon6,
fou6,
fun6,
oaf6,
ufo6,
can5,
con5,
oca5,
2 letter words:
ka6,
ko6,
fa5,
of5,
an2,
na2,
no2,
nu2,
on2,
ou2,
un2,