6 letter words:
bourgs9,
5 letter words:
curbs9,
scrub9,
bogus8,
bourg8,
burgs8,
grubs8,
scour7,
4 letter words:
cobs8,
cubs8,
curb8,
bogs7,
bugs7,
burg7,
cogs7,
gobs7,
grub7,
bros6,
burs6,
cors6,
crus6,
curs6,
orbs6,
orcs6,
robs6,
rocs6,
rubs6,
sorb6,
urbs6,
rugs5,
ours4,
sour4,
3 letter words:
cob7,
cub7,
bog6,
bug6,
cog6,
gob6,
bos5,
bro5,
bur5,
bus5,
cor5,
cos5,
cru5,
cur5,
orb5,
orc5,
rob5,
roc5,
rub5,
sob5,
sub5,
urb5,
gor4,
gos4,
rug4,
ors3,
our3,
sou3,
2 letter words:
bo4,
go3,
or2,
os2,
so2,
us2,