10 letter words:
bookkeeper22,
7 letter words:
prebook15,
6 letter words:
booker12,
keeper12,
rebook12,
beeper10,
5 letter words:
kopek15,
broke11,
brook11,
ebook11,
kreep11,
pekoe11,
poker11,
probe9,
rebop9,
4 letter words:
keek12,
kook12,
berk10,
book10,
bork10,
keep10,
kerb10,
kobo10,
peek10,
peke10,
perk10,
poke10,
pork10,
beep8,
kore8,
reek8,
rook8,
beer6,
boor6,
bore6,
bree6,
broo6,
epee6,
oboe6,
peer6,
pere6,
poor6,
pore6,
pree6,
repo6,
robe6,
rope6,
3 letter words:
kep9,
kob9,
kop9,
bop7,
eek7,
eke7,
kor7,
oke7,
bee5,
boo5,
bro5,
obe5,
ope5,
orb5,
pee5,
per5,
poo5,
pro5,
reb5,
rep5,
rob5,
ere3,
ore3,
ree3,
roe3,
2 letter words:
be4,
bo4,
op4,
pe4,
er2,
oe2,
or2,
re2,