5 letter words:
opium9,
4 letter words:
poky13,
mopy11,
pipy11,
pimp10,
pomp10,
pump10,
3 letter words:
yok10,
yuk10,
kip9,
kop9,
yip8,
yom8,
yum8,
yup8,
imp7,
koi7,
mop7,
pip7,
pom7,
pop7,
pup7,
ump7,
you6,
piu5,
poi5,
upo5,
2 letter words:
my7,
ki6,
oy5,
yo5,
mi4,
mo4,
mu4,
om4,
op4,
pi4,
um4,
up4,
oi2,