5 letter words:
kombu13,
bunko11,
korun9,
bourn7,
mourn7,
4 letter words:
bonk10,
bork10,
bunk10,
knob10,
monk10,
murk10,
knur8,
numb8,
umbo8,
born6,
burn6,
morn6,
muon6,
norm6,
3 letter words:
kob9,
bum7,
kor7,
mob7,
bro5,
bun5,
bur5,
mon5,
mor5,
mun5,
nob5,
nom5,
nub5,
orb5,
rob5,
rom5,
rub5,
rum5,
urb5,
nor3,
our3,
run3,
urn3,
2 letter words:
bo4,
mo4,
mu4,
om4,
um4,
no2,
nu2,
on2,
or2,
un2,