5 letter words:
dumbo10,
bound8,
mound8,
4 letter words:
dumb9,
numb8,
ombu8,
umbo8,
bond7,
budo7,
bund7,
doum7,
boun6,
muon6,
doun5,
udon5,
undo5,
3 letter words:
bum7,
mob7,
bod6,
bud6,
dob6,
dom6,
dub6,
mod6,
mud6,
bon5,
bun5,
mon5,
mou5,
mun5,
nob5,
nom5,
nub5,
don4,
dun4,
duo4,
nod4,
oud4,
udo4,
2 letter words:
bo4,
mo4,
mu4,
ob4,
om4,
um4,
do3,
od3,
no2,
nu2,
on2,
ou2,
un2,