5 letter words:
croak11,
crook11,
iroko9,
karoo9,
koori9,
korai9,
coria7,
4 letter words:
cark10,
cook10,
cork10,
rack10,
rick10,
rock10,
karo8,
kora8,
koro8,
okra8,
raik8,
raki8,
rook8,
arco6,
ciao6,
coir6,
orca6,
3 letter words:
ick9,
ark7,
irk7,
kai7,
kir7,
koa7,
koi7,
kor7,
oak7,
oik7,
oka7,
rok7,
arc5,
car5,
coo5,
cor5,
oca5,
orc5,
roc5,
air3,
oar3,
oor3,
ora3,
rai3,
ria3,
roo3,
2 letter words:
ka6,
ki6,
ko6,
ai2,
ar2,
io2,
oi2,
oo2,
or2,