6 letter words:
suburb10,
5 letter words:
brims9,
bubus9,
burbs9,
rubus7,
4 letter words:
bibs8,
brim8,
bubs8,
bubu8,
bums8,
burb8,
mibs8,
sibb8,
bris6,
burs6,
mirs6,
ribs6,
rims6,
rubs6,
rums6,
urbs6,
urus4,
3 letter words:
bib7,
bub7,
bum7,
mib7,
bis5,
bur5,
bus5,
ism5,
mir5,
mis5,
mus5,
rib5,
rim5,
rub5,
rum5,
sib5,
sim5,
sub5,
sum5,
urb5,
sir3,
sri3,
2 letter words:
bi4,
mi4,
mu4,
um4,
is2,
si2,
us2,