5 letter words:
cippi11,
coupe9,
poupe9,
4 letter words:
cope8,
coup8,
epic8,
pepo8,
pice8,
pipe8,
pipi8,
poep8,
pope8,
puce8,
euoi4,
3 letter words:
cep7,
cop7,
cup7,
pec7,
pep7,
pic7,
pip7,
pop7,
pup7,
cue5,
eco5,
ecu5,
ice5,
ope5,
oup5,
pie5,
piu5,
poi5,
upo5,
2 letter words:
op4,
pe4,
pi4,
po4,
up4,
io2,
oe2,
oi2,
ou2,