5 letter words:
ebook11,
4 letter words:
boke10,
boko10,
bonk10,
book10,
knob10,
kobo10,
keno8,
nook8,
bone6,
boon6,
ebon6,
oboe6,
3 letter words:
bok9,
keb9,
kob9,
ken7,
kon7,
nek7,
oke7,
ben5,
bon5,
boo5,
neb5,
nob5,
obe5,
obo5,
eon3,
noo3,
one3,
ono3,
oon3,
2 letter words:
ko6,
be4,
bo4,
ob4,
en2,
ne2,
no2,
oe2,
on2,
oo2,