5 letter words:
kerfs12,
perks11,
pukes11,
purse7,
sprue7,
super7,
4 letter words:
kefs11,
kerf11,
keps10,
perk10,
puke10,
skep10,
kues8,
rusk8,
ukes8,
feus7,
furs7,
fuse7,
refs7,
serf7,
surf7,
pure6,
purs6,
reps6,
spue6,
spur6,
supe6,
urps6,
rues4,
ruse4,
suer4,
sure4,
user4,
3 letter words:
kef10,
kep9,
kue7,
suk7,
uke7,
efs6,
fer6,
fes6,
feu6,
fur6,
ref6,
per5,
pes5,
pur5,
pus5,
rep5,
sup5,
ups5,
urp5,
ers3,
res3,
rue3,
ser3,
sue3,
use3,
2 letter words:
ef5,
fe5,
pe4,
up4,
er2,
es2,
re2,
us2,