6 letter words:
spurts8,
5 letter words:
spurs7,
spurt7,
turps7,
rusts5,
truss5,
4 letter words:
psst6,
purs6,
puss6,
puts6,
spur6,
sups6,
tups6,
urps6,
rust4,
ruts4,
3 letter words:
pst5,
pur5,
pus5,
put5,
sup5,
tup5,
ups5,
urp5,
rut3,
sur3,
sus3,
uts3,
2 letter words:
up4,
st2,
ur2,
us2,
ut2,