5 letter words:
brook11,
drook10,
boord8,
brood8,
dobro8,
droob8,
4 letter words:
boko10,
book10,
bork10,
kobo10,
dook9,
dork9,
koro8,
rook8,
bord7,
brod7,
doob7,
dorb7,
boor6,
broo6,
door5,
odor5,
ordo5,
rood5,
3 letter words:
bok9,
kob9,
kor7,
rok7,
bod6,
dob6,
boo5,
bor5,
bro5,
obo5,
orb5,
rob5,
doo4,
dor4,
ord4,
rod4,
oor3,
roo3,
2 letter words:
ko6,
bo4,
ob4,
do3,
od3,
oo2,
or2,