10 letter words:
gunrunning12,
7 letter words:
gunning9,
running8,
6 letter words:
urging8,
5 letter words:
ruing6,
unrig6,
inrun5,
inurn5,
4 letter words:
grig6,
girn5,
grin5,
guru5,
ring5,
rung5,
ruin4,
3 letter words:
gig5,
igg5,
gin4,
gnu4,
gun4,
rig4,
rug4,
inn3,
nun3,
rin3,
run3,
urn3,
2 letter words:
in2,
nu2,
un2,
