6 letter words:
cookie12,
coggie10,
5 letter words:
gecko12,
cogie8,
4 letter words:
geck11,
coke10,
cook10,
gook9,
gogo6,
goog6,
3 letter words:
ick9,
keg8,
eik7,
koi7,
oik7,
oke7,
cig6,
cog6,
coo5,
eco5,
egg5,
gig5,
ice5,
igg5,
ego4,
geo4,
gie4,
gio4,
goe4,
goo4,
2 letter words:
ki6,
ko6,
gi3,
go3,
io2,
oe2,
oi2,
oo2,