5 letter words:
croak11,
cargo8,
4 letter words:
cark10,
cork10,
rack10,
rock10,
grok9,
kago9,
karo8,
kora8,
okra8,
crag7,
crog7,
arco6,
orca6,
gora5,
3 letter words:
ark7,
koa7,
kor7,
oak7,
oka7,
rok7,
cag6,
cog6,
arc5,
car5,
cor5,
oca5,
orc5,
roc5,
ago4,
gar4,
goa4,
gor4,
rag4,
oar3,
ora3,
2 letter words:
ka6,
ko6,
ag3,
go3,
ar2,
or2,