6 letter words:
betook12,
booker12,
broker12,
rebook12,
retook10,
robber10,
reboot8,
rooter6,
torero6,
5 letter words:
kebob13,
broke11,
brook11,
ebook11,
toker9,
troke9,
borer7,
robot7,
retro5,
rotor5,
4 letter words:
berk10,
book10,
bork10,
kerb10,
kobo10,
boob8,
keto8,
kore8,
koto8,
rook8,
toke8,
took8,
trek8,
boor6,
boot6,
bore6,
bort6,
broo6,
oboe6,
robe6,
root4,
rote4,
roto4,
tore4,
toro4,
torr4,
3 letter words:
kob9,
bob7,
ebb7,
kor7,
oke7,
bet5,
boo5,
bot5,
bro5,
brr5,
obe5,
orb5,
reb5,
rob5,
err3,
oot3,
ore3,
ort3,
ret3,
roe3,
rot3,
toe3,
too3,
tor3,
2 letter words:
be4,
bo4,
er2,
et2,
oe2,
or2,
re2,
to2,