5 letter words:
aroba7,
braai7,
rubai7,
urbia7,
4 letter words:
abri6,
arba6,
baur6,
biro6,
boar6,
bora6,
brio6,
bura6,
obia6,
rabi6,
riba6,
aria4,
aura4,
raia4,
urao4,
3 letter words:
aba5,
abo5,
arb5,
baa5,
bar5,
bio5,
boa5,
boi5,
bor5,
bra5,
bro5,
bru5,
bur5,
oba5,
obi5,
orb5,
rib5,
rob5,
rub5,
urb5,
aia3,
air3,
aua3,
oar3,
ora3,
our3,
rai3,
ria3,
2 letter words:
ab4,
ba4,
bi4,
bo4,
ob4,
aa2,
ai2,
ar2,
io2,
oi2,
or2,
ou2,
ur2,