4 letter words:
coup8,
wino7,
cion6,
coin6,
coni6,
icon6,
pion6,
unci6,
unco6,
upon6,
3 letter words:
cow8,
pow8,
wop8,
cop7,
cup7,
pic7,
now6,
own6,
win6,
won6,
con5,
nip5,
pin5,
piu5,
poi5,
pun5,
upo5,
ion3,
2 letter words:
ow5,
wo5,
op4,
pi4,
up4,
in2,
no2,
nu2,
oi2,
on2,
un2,