5 letter words:
croak11,
4 letter words:
jack17,
jock17,
czar15,
cark10,
cork10,
rack10,
rock10,
kora8,
okra8,
arco6,
orca6,
3 letter words:
coz14,
azo12,
zoa12,
jar10,
raj10,
ark7,
koa7,
kor7,
oak7,
oka7,
arc5,
car5,
cor5,
oca5,
orc5,
roc5,
oar3,
ora3,
2 letter words:
za11,
jo9,
ka6,
ar2,
or2,