6 letter words:
rubigo9,
5 letter words:
bourg8,
guiro6,
4 letter words:
biog7,
brig7,
burg7,
grub7,
biro6,
brio6,
giro5,
3 letter words:
big6,
bog6,
bug6,
gib6,
gob6,
bio5,
bro5,
bur5,
obi5,
orb5,
rib5,
rob5,
rub5,
urb5,
gor4,
rig4,
rug4,
our3,
2 letter words:
bi4,
bo4,
go3,
oi2,
or2,
