6 letter words:
orbier8,
5 letter words:
borer7,
brier7,
4 letter words:
bier6,
biro6,
birr6,
bore6,
brie6,
brio6,
robe6,
3 letter words:
bio5,
bro5,
brr5,
obe5,
obi5,
orb5,
reb5,
rib5,
rob5,
err3,
ire3,
ore3,
rei3,
roe3,
2 letter words:
be4,
bi4,
bo4,
er2,
oe2,
oi2,
or2,
re2,
