5 letter words:
praus7,
supra7,
4 letter words:
pars6,
prau6,
purs6,
raps6,
rasp6,
spar6,
spur6,
upas6,
urps6,
rusa4,
sura4,
ursa4,
3 letter words:
asp5,
par5,
pas5,
pur5,
pus5,
rap5,
sap5,
spa5,
sup5,
ups5,
urp5,
ars3,
ras3,
sar3,
sau3,
sur3,
2 letter words:
pa4,
up4,
ar2,
as2,
ur2,
us2,