5 letter words:
brook11,
4 letter words:
hook11,
book10,
bork10,
kobo10,
boho9,
buhr9,
hobo9,
rook8,
hour7,
boor6,
broo6,
3 letter words:
kob9,
hob8,
hub8,
kor7,
oho6,
ooh6,
rho6,
boo5,
bro5,
bur5,
orb5,
rob5,
rub5,
urb5,
our3,
2 letter words:
ho5,
oh5,
uh5,
bo4,
or2,