4 letter words:
konk12,
kook12,
kaon8,
knot8,
koan8,
koto8,
nook8,
tank8,
took8,
anon4,
nona4,
noon4,
nota4,
onto4,
toon4,
3 letter words:
kat7,
koa7,
oak7,
oka7,
ant3,
nan3,
noo3,
not3,
oat3,
ono3,
oot3,
tan3,
tao3,
ton3,
too3,
2 letter words:
ka6,
an2,
at2,
na2,
no2,
on2,
ta2,
to2,