5 letter words:
lupus7,
purls7,
slurp7,
usurp7,
4 letter words:
dups7,
puds7,
spud7,
plus6,
puls6,
purl6,
purs6,
spur6,
urps6,
surd5,
urds5,
slur4,
sulu4,
ulus4,
urus4,
3 letter words:
dup6,
pud6,
pul5,
pur5,
pus5,
sup5,
ups5,
urp5,
urd4,
ulu3,
2 letter words:
up4,
us2,