5 letter words:
knout9,
pound8,
punto7,
puton7,
donut6,
4 letter words:
knop10,
punk10,
dunk9,
kudo9,
kudu9,
knot8,
pupu8,
pond7,
updo7,
pout6,
punt6,
upon6,
dunt5,
udon5,
undo5,
unto4,
3 letter words:
kop9,
pop7,
pup7,
dup6,
pod6,
pud6,
opt5,
pot5,
pun5,
put5,
top5,
tup5,
upo5,
don4,
dot4,
dun4,
duo4,
nod4,
oud4,
tod4,
udo4,
not3,
nut3,
out3,
ton3,
tun3,
2 letter words:
op4,
up4,
do3,
od3,
no2,
nu2,
on2,
to2,
un2,
ut2,