7 letter words:
booking14,
6 letter words:
boking13,
booing9,
5 letter words:
boink11,
bingo8,
boing8,
bongo8,
boong8,
4 letter words:
bink10,
boko10,
bonk10,
book10,
knob10,
kobo10,
gink9,
gonk9,
gook9,
king9,
ikon8,
kino8,
nook8,
oink8,
bing7,
biog7,
bong7,
gobo7,
boon6,
goon5,
ingo5,
3 letter words:
bok9,
kob9,
ink7,
kin7,
koi7,
kon7,
oik7,
big6,
bog6,
gib6,
gob6,
bin5,
bio5,
boi5,
bon5,
boo5,
nib5,
nob5,
obi5,
obo5,
gin4,
gio4,
gon4,
goo4,
nog4,
ion3,
noo3,
ono3,
oon3,
2 letter words:
ki6,
ko6,
bi4,
bo4,
ob4,
gi3,
go3,
in2,
io2,
no2,
oi2,
on2,
oo2,
