6 letter words:
submit10,
4 letter words:
bibs8,
bubs8,
bums8,
mibs8,
sibb8,
bits6,
bust6,
buts6,
mist6,
must6,
muts6,
smit6,
smut6,
stub6,
stum6,
tubs6,
suit4,
tuis4,
3 letter words:
bib7,
bub7,
bum7,
mib7,
bis5,
bit5,
bus5,
but5,
ism5,
mis5,
mus5,
mut5,
sib5,
sim5,
sub5,
sum5,
tub5,
its3,
sit3,
tis3,
tui3,
uts3,
2 letter words:
bi4,
mi4,
mu4,
um4,
is2,
it2,
si2,
ti2,
us2,
ut2,