9 letter words:
occurring14,
7 letter words:
couring10,
curring10,
6 letter words:
concur10,
coring9,
curing9,
rigour7,
runrig7,
5 letter words:
conic9,
croci9,
occur9,
coign8,
corgi8,
cuing8,
incog8,
orgic8,
corni7,
cornu7,
cruor7,
curio7,
incur7,
orcin7,
roric7,
runic7,
giron6,
groin6,
guiro6,
rigor6,
ruing6,
unrig6,
4 letter words:
croc8,
crog7,
cion6,
coin6,
coir6,
coni6,
corn6,
cour6,
curn6,
curr6,
icon6,
unci6,
unco6,
uric6,
girn5,
giro5,
girr5,
gori5,
grin5,
gurn5,
ingo5,
ring5,
rong5,
rung5,
inro4,
iron4,
noir4,
nori4,
nurr4,
ourn4,
roin4,
ruin4,
3 letter words:
cig6,
cog6,
con5,
cor5,
cru5,
cur5,
orc5,
roc5,
ruc5,
gin4,
gio4,
gnu4,
gon4,
gor4,
gun4,
gur4,
nog4,
rig4,
rug4,
ion3,
nor3,
nur3,
our3,
rin3,
run3,
uni3,
urn3,
2 letter words:
gi3,
go3,
gu3,
ug3,
in2,
io2,
no2,
nu2,
oi2,
on2,
or2,
ou2,
un2,
ur2,