6 letter words:
mutter8,
turret6,
5 letter words:
murre7,
muter7,
truer5,
utter5,
4 letter words:
mure6,
murr6,
mute6,
mutt6,
term6,
ruer4,
tret4,
true4,
tutu4,
3 letter words:
emu5,
met5,
mut5,
rem5,
rum5,
err3,
ret3,
rue3,
rut3,
tet3,
tut3,
ute3,
2 letter words:
em4,
me4,
mu4,
um4,
er2,
et2,
re2,
ut2,