5 letter words:
kombu13,
bunko11,
konbu11,
korun9,
rumbo9,
bourn7,
mourn7,
4 letter words:
bonk10,
bork10,
bouk10,
bunk10,
burk10,
knob10,
knub10,
monk10,
murk10,
borm8,
knur8,
koru8,
nork8,
numb8,
ombu8,
umbo8,
born6,
boun6,
burn6,
morn6,
muon6,
norm6,
roum6,
ourn4,
3 letter words:
bok9,
kob9,
bum7,
kon7,
kor7,
mob7,
ouk7,
rok7,
bon5,
bor5,
bro5,
bru5,
bun5,
bur5,
mon5,
mor5,
mou5,
mun5,
nob5,
nom5,
nub5,
orb5,
rob5,
rom5,
rub5,
rum5,
urb5,
nor3,
nur3,
our3,
run3,
urn3,
2 letter words:
ko6,
bo4,
mo4,
mu4,
ob4,
om4,
um4,
no2,
nu2,
on2,
or2,
ou2,
un2,
ur2,