6 letter words:
prunus8,
upruns8,
5 letter words:
spurn7,
sunup7,
uprun7,
usurp7,
4 letter words:
puns6,
purs6,
spun6,
spur6,
urps6,
nurs4,
runs4,
urns4,
urus4,
3 letter words:
pun5,
pur5,
pus5,
sup5,
ups5,
urp5,
nur3,
nus3,
run3,
sun3,
sur3,
uns3,
urn3,
2 letter words:
up4,
nu2,
un2,
ur2,
us2,
