9 letter words:
murmuring14,
6 letter words:
murmur10,
muring9,
5 letter words:
ruing6,
unrig6,
4 letter words:
mumu8,
grim7,
grum7,
muni6,
murr6,
girn5,
grin5,
guru5,
ring5,
rung5,
ruin4,
3 letter words:
mim7,
mum7,
umm7,
gum6,
mig6,
mug6,
mir5,
mun5,
nim5,
rim5,
rum5,
gin4,
gnu4,
gun4,
rig4,
rug4,
rin3,
run3,
urn3,
2 letter words:
mm6,
mi4,
mu4,
um4,
in2,
nu2,
un2,