5 letter words:
bromo9,
broom9,
burro7,
morro7,
rumor7,
4 letter words:
boom8,
umbo8,
boor6,
broo6,
burr6,
moor6,
murr6,
room6,
3 letter words:
bum7,
mob7,
boo5,
bro5,
brr5,
bur5,
moo5,
mor5,
orb5,
rob5,
rom5,
rub5,
rum5,
urb5,
our3,
2 letter words:
bo4,
mo4,
mu4,
om4,
um4,
or2,