6 letter words:
curing9,
ricing9,
5 letter words:
cuing8,
icing8,
incur7,
ricin7,
runic7,
iring6,
ruing6,
unrig6,
4 letter words:
curn6,
unci6,
uric6,
girn5,
grin5,
ring5,
rung5,
ruin4,
3 letter words:
cig6,
cru5,
cur5,
gin4,
gnu4,
gun4,
rig4,
rug4,
rin3,
run3,
urn3,
2 letter words:
in2,
nu2,
un2,