6 letter words:
burgee9,
5 letter words:
beige8,
giber8,
grebe8,
4 letter words:
berg7,
brig7,
burg7,
gibe7,
grub7,
beer6,
bier6,
bree6,
brie6,
rube6,
eger5,
gree5,
grue5,
urge5,
3 letter words:
beg6,
big6,
bug6,
gib6,
bee5,
bur5,
reb5,
rib5,
rub5,
urb5,
erg4,
gee4,
gie4,
reg4,
rig4,
rug4,
ere3,
ire3,
ree3,
rei3,
rue3,
2 letter words:
be4,
bi4,
er2,
re2,