5 letter words:
built7,
4 letter words:
bits6,
bust6,
buts6,
libs6,
slub6,
stub6,
tubs6,
list4,
lits4,
litu4,
lust4,
silt4,
slit4,
slut4,
suit4,
tils4,
tuis4,
3 letter words:
bis5,
bit5,
bus5,
but5,
lib5,
sib5,
sub5,
tub5,
its3,
lis3,
lit3,
sit3,
til3,
tis3,
tui3,
uts3,
2 letter words:
bi4,
is2,
it2,
li2,
si2,
ti2,
us2,
ut2,