5 letter words:
corgi8,
orgic8,
4 letter words:
cork10,
rick10,
rock10,
grok9,
crog7,
coir6,
giro5,
gori5,
3 letter words:
ick9,
irk7,
kir7,
koi7,
kor7,
oik7,
rok7,
cig6,
cog6,
cor5,
orc5,
roc5,
gio4,
gor4,
rig4,
2 letter words:
ki6,
ko6,
gi3,
go3,
io2,
oi2,
or2,