5 letter words:
coypu12,
pubic11,
4 letter words:
copy11,
pyic11,
upby11,
buoy9,
coup8,
3 letter words:
boy8,
buy8,
coy8,
icy8,
yip8,
yob8,
yup8,
bop7,
cob7,
cop7,
cub7,
cup7,
pic7,
pub7,
you6,
bio5,
obi5,
piu5,
poi5,
upo5,
2 letter words:
by7,
oy5,
yo5,
bi4,
bo4,
op4,
pi4,
up4,
oi2,