5 letter words:
built7,
tulip7,
uplit7,
4 letter words:
blip8,
bill6,
bull6,
pill6,
ptui6,
puli6,
pull6,
lilt4,
litu4,
till4,
3 letter words:
pub7,
bit5,
but5,
lib5,
lip5,
pit5,
piu5,
pul5,
put5,
tip5,
tub5,
tup5,
ill3,
lit3,
til3,
tui3,
2 letter words:
bi4,
pi4,
up4,
it2,
li2,
ti2,
ut2,