6 letter words:
mutter8,
nutter6,
5 letter words:
muter7,
rumen7,
unmet7,
tuner5,
utter5,
4 letter words:
menu6,
mure6,
mute6,
mutt6,
neum6,
term6,
nett4,
rent4,
rune4,
runt4,
tent4,
tern4,
tret4,
true4,
tune4,
turn4,
3 letter words:
emu5,
men5,
met5,
mun5,
mut5,
rem5,
rum5,
ern3,
net3,
nut3,
ret3,
rue3,
run3,
rut3,
ten3,
tet3,
tun3,
tut3,
urn3,
ute3,
2 letter words:
em4,
me4,
mu4,
um4,
en2,
er2,
et2,
ne2,
nu2,
re2,
un2,
ut2,