5 letter words:
fucks14,
kufis12,
cuifs10,
ficus10,
fucus10,
4 letter words:
fuck13,
kifs11,
kufi11,
cusk10,
sick10,
suck10,
cuif9,
fisc9,
fuci9,
3 letter words:
kif10,
ick9,
kis7,
ski7,
suk7,
ifs6,
cis5,
sic5,
2 letter words:
ki6,
if5,
is2,
si2,
us2,