5 letter words:
purls7,
slurp7,
spurt7,
turps7,
4 letter words:
plus6,
puls6,
purl6,
purs6,
puts6,
spur6,
tups6,
urps6,
lurs4,
lust4,
rust4,
ruts4,
slur4,
slut4,
3 letter words:
plu5,
pst5,
pul5,
pur5,
pus5,
put5,
sup5,
tup5,
ups5,
urp5,
lur3,
rut3,
sur3,
uts3,
2 letter words:
up4,
st2,
ur2,
us2,
ut2,