6 letter words:
runrig7,
5 letter words:
wring9,
wrung9,
ruing6,
unrig6,
4 letter words:
wing8,
girn5,
girr5,
grin5,
gurn5,
ring5,
rung5,
nurr4,
ruin4,
3 letter words:
wig7,
win6,
gin4,
gnu4,
gun4,
gur4,
rig4,
rug4,
nur3,
rin3,
run3,
uni3,
urn3,
2 letter words:
gi3,
gu3,
ug3,
in2,
nu2,
un2,
ur2,