4 letter words:
lump8,
plum8,
pomo8,
loom6,
loop6,
loup6,
moll6,
mono6,
mool6,
moon6,
mull6,
muon6,
poll6,
polo6,
pool6,
poon6,
pull6,
upon6,
loon4,
lulu4,
nolo4,
null4,
3 letter words:
mop7,
pom7,
ump7,
lop5,
lum5,
mol5,
mon5,
moo5,
mun5,
nom5,
pol5,
poo5,
pul5,
pun5,
upo5,
loo3,
noo3,
ono3,
ulu3,
2 letter words:
mo4,
mu4,
om4,
op4,
um4,
up4,
lo2,
no2,
nu2,
on2,
un2,