5 letter words:
frank12,
krona9,
4 letter words:
fank11,
fork11,
kaon8,
karn8,
karo8,
knar8,
koan8,
kora8,
nark8,
nork8,
okra8,
rank8,
afro7,
fano7,
faro7,
fora7,
roan4,
3 letter words:
kaf10,
ark7,
koa7,
kon7,
kor7,
oak7,
oka7,
rok7,
arf6,
fan6,
far6,
fon6,
for6,
fra6,
fro6,
oaf6,
orf6,
nor3,
oar3,
ora3,
ran3,
2 letter words:
ka6,
ko6,
fa5,
of5,
an2,
ar2,
na2,
no2,
on2,
or2,