6 letter words:
tergum9,
mutter8,
gutter7,
5 letter words:
grume8,
muter7,
utter5,
4 letter words:
germ7,
geum7,
grum7,
mure6,
mute6,
mutt6,
term6,
grue5,
guru5,
trug5,
urge5,
tret4,
true4,
tutu4,
3 letter words:
gem6,
gum6,
meg6,
mug6,
emu5,
met5,
mut5,
rem5,
rum5,
erg4,
get4,
gut4,
reg4,
rug4,
teg4,
tug4,
ret3,
rue3,
rut3,
tet3,
tut3,
ute3,
2 letter words:
em4,
me4,
mu4,
um4,
er2,
et2,
re2,
ut2,