5 letter words:
flour8,
fluor8,
4 letter words:
folk11,
fork11,
kufi11,
kilo8,
lurk8,
filo7,
flir7,
foil7,
foul7,
four7,
furl7,
rolf7,
lour4,
roil4,
3 letter words:
kif10,
ilk7,
irk7,
kir7,
koi7,
kor7,
fil6,
fir6,
flu6,
for6,
fou6,
fro6,
fur6,
rif6,
oil3,
our3,
2 letter words:
ki6,
if5,
of5,
li2,
lo2,
oi2,
or2,