7 letter words:
unfrock16,
6 letter words:
uncork12,
5 letter words:
frock14,
cronk11,
korun9,
cornu7,
4 letter words:
fuck13,
fork11,
funk11,
conk10,
cork10,
nock10,
rock10,
ruck10,
conf9,
corf9,
curf9,
knur8,
koru8,
nork8,
four7,
corn6,
cour6,
curn6,
unco6,
ourn4,
3 letter words:
kon7,
kor7,
ouk7,
rok7,
fon6,
for6,
fou6,
fro6,
fun6,
fur6,
orf6,
ufo6,
con5,
cor5,
cru5,
cur5,
orc5,
roc5,
ruc5,
nor3,
nur3,
our3,
run3,
urn3,
2 letter words:
ko6,
of5,
no2,
nu2,
on2,
or2,
ou2,
un2,
ur2,