6 letter words:
punter8,
5 letter words:
erupt7,
prune7,
tuner5,
4 letter words:
enuf7,
fern7,
fret7,
reft7,
tref7,
turf7,
pent6,
pert6,
punt6,
pure6,
rent4,
rune4,
runt4,
tern4,
true4,
tune4,
turn4,
3 letter words:
eft6,
fen6,
fer6,
fet6,
feu6,
fun6,
fur6,
ref6,
pen5,
per5,
pet5,
pun5,
pur5,
put5,
rep5,
tup5,
urp5,
ern3,
net3,
nut3,
ret3,
rue3,
run3,
rut3,
ten3,
tun3,
urn3,
ute3,
2 letter words:
ef5,
fe5,
pe4,
up4,
en2,
er2,
et2,
ne2,
nu2,
re2,
un2,
ut2,