6 letter words:
bulgur9,
burgoo9,
5 letter words:
bourg8,
4 letter words:
blog7,
burg7,
glob7,
gobo7,
grub7,
blur6,
bolo6,
boor6,
broo6,
burl6,
lobo6,
obol6,
guru5,
logo5,
lour4,
3 letter words:
bog6,
bug6,
gob6,
boo5,
bro5,
bur5,
lob5,
orb5,
rob5,
rub5,
urb5,
goo4,
gor4,
gul4,
log4,
lug4,
rug4,
loo3,
our3,
ulu3,
2 letter words:
bo4,
go3,
lo2,
or2,