6 letter words:
prunes8,
5 letter words:
ferns8,
prune7,
purse7,
sprue7,
spurn7,
super7,
nurse5,
runes5,
4 letter words:
enuf7,
fens7,
fern7,
feus7,
funs7,
furs7,
fuse7,
refs7,
serf7,
surf7,
pens6,
puns6,
pure6,
purs6,
reps6,
spue6,
spun6,
spur6,
supe6,
urps6,
erns4,
rues4,
rune4,
runs4,
ruse4,
suer4,
sure4,
urns4,
user4,
3 letter words:
efs6,
fen6,
fer6,
fes6,
feu6,
fun6,
fur6,
ref6,
pen5,
per5,
pes5,
pun5,
pur5,
pus5,
rep5,
sup5,
ups5,
urp5,
ens3,
ern3,
ers3,
nus3,
res3,
rue3,
run3,
sen3,
ser3,
sue3,
sun3,
uns3,
urn3,
use3,
2 letter words:
ef5,
fe5,
pe4,
up4,
en2,
er2,
es2,
ne2,
nu2,
re2,
un2,
us2,