5 letter words:
kroon9,
4 letter words:
gonk9,
gook9,
grok9,
koro8,
nook8,
nork8,
rook8,
goon5,
goor5,
rong5,
roon4,
3 letter words:
kon7,
kor7,
rok7,
gon4,
goo4,
gor4,
nog4,
noo3,
nor3,
ono3,
oon3,
oor3,
roo3,
2 letter words:
ko6,
go3,
no2,
on2,
oo2,
or2,