5 letter words:
bromo9,
broom9,
rumbo9,
buroo7,
burro7,
morro7,
rumor7,
4 letter words:
boom8,
borm8,
ombu8,
umbo8,
boor6,
broo6,
burr6,
moor6,
murr6,
room6,
roum6,
3 letter words:
bum7,
mob7,
boo5,
bor5,
bro5,
brr5,
bru5,
bur5,
moo5,
mor5,
mou5,
obo5,
oom5,
orb5,
rob5,
rom5,
rub5,
rum5,
urb5,
oor3,
our3,
roo3,
2 letter words:
bo4,
mo4,
mu4,
ob4,
om4,
um4,
oo2,
or2,
ou2,
ur2,