4 letter words:
kufi11,
bouk10,
buik10,
pouk10,
bufo9,
pfui9,
pouf9,
bubo8,
3 letter words:
kif10,
bok9,
kip9,
kob9,
kop9,
fib8,
fob8,
fop8,
fub8,
bib7,
bob7,
bop7,
bub7,
koi7,
oik7,
ouk7,
pub7,
fou6,
ufo6,
bio5,
boi5,
obi5,
oup5,
piu5,
poi5,
upo5,
2 letter words:
ki6,
ko6,
if5,
of5,
bi4,
bo4,
ob4,
op4,
pi4,
po4,
up4,
io2,
oi2,
ou2,