6 letter words:
punter8,
putter8,
nutter6,
5 letter words:
erupt7,
prune7,
tuner5,
utter5,
4 letter words:
pent6,
pert6,
punt6,
pure6,
putt6,
nett4,
rent4,
rune4,
runt4,
tent4,
tern4,
tret4,
true4,
tune4,
turn4,
3 letter words:
pen5,
per5,
pet5,
pun5,
pur5,
put5,
rep5,
tup5,
urp5,
ern3,
net3,
nut3,
ret3,
rue3,
run3,
rut3,
ten3,
tet3,
tun3,
tut3,
urn3,
ute3,
2 letter words:
pe4,
up4,
en2,
er2,
et2,
ne2,
nu2,
re2,
un2,
ut2,