6 letter words:
kokako18,
5 letter words:
kokra13,
karoo9,
krona9,
kroon9,
4 letter words:
kark12,
konk12,
kook12,
kaon8,
karn8,
karo8,
knar8,
koan8,
kora8,
koro8,
nark8,
nook8,
nork8,
okra8,
rank8,
rook8,
roan4,
roon4,
3 letter words:
kak11,
ark7,
koa7,
kon7,
kor7,
oak7,
oka7,
rok7,
noo3,
nor3,
oar3,
ono3,
oon3,
oor3,
ora3,
ran3,
roo3,
2 letter words:
ka6,
ko6,
an2,
ar2,
na2,
no2,
on2,
oo2,
or2,