6 letter words:
booked13,
betook12,
booted9,
5 letter words:
ebook11,
toked10,
booed8,
debut8,
doubt8,
tubed8,
buteo7,
outdo6,
outed6,
4 letter words:
book10,
kobo10,
duke9,
kudo9,
keto8,
koto8,
toke8,
took8,
bedu7,
bode7,
debt7,
boot6,
bout6,
bute6,
oboe6,
tube6,
dote5,
duet5,
toed5,
3 letter words:
kob9,
kue7,
oke7,
uke7,
bed6,
bod6,
bud6,
deb6,
dub6,
bet5,
boo5,
bot5,
but5,
obe5,
tub5,
doe4,
dot4,
due4,
duo4,
ode4,
oud4,
ted4,
tod4,
udo4,
oot3,
out3,
toe3,
too3,
ute3,
2 letter words:
be4,
bo4,
de3,
do3,
ed3,
od3,
et2,
oe2,
to2,
ut2,