8 letter words:
grubbier13,
7 letter words:
grubber12,
6 letter words:
gibber11,
briber10,
ribber10,
rubber10,
burger9,
burier8,
rubier8,
5 letter words:
bribe9,
giber8,
brier7,
rerig6,
urger6,
4 letter words:
burb8,
berg7,
brig7,
burg7,
gibe7,
grub7,
bier6,
birr6,
brie6,
burr6,
rube6,
grue5,
urge5,
ruer4,
3 letter words:
bib7,
bub7,
ebb7,
beg6,
big6,
bug6,
gib6,
brr5,
bur5,
reb5,
rib5,
rub5,
urb5,
erg4,
gie4,
reg4,
rig4,
rug4,
err3,
ire3,
rei3,
rue3,
2 letter words:
be4,
bi4,
er2,
re2,
