5 letter words:
blubs9,
bulbs9,
clubs9,
cults7,
4 letter words:
blub8,
bubs8,
bulb8,
club8,
cubs8,
bust6,
buts6,
cult6,
cuts6,
scut6,
slub6,
stub6,
tubs6,
lust4,
slut4,
3 letter words:
bub7,
cub7,
bus5,
but5,
cut5,
sub5,
tub5,
uts3,
2 letter words:
us2,
ut2,