5 letter words:
brook11,
drouk10,
brood8,
dobro8,
odour6,
4 letter words:
book10,
bork10,
kobo10,
dork9,
kudo9,
rook8,
burd7,
drub7,
boor6,
broo6,
door5,
dour5,
duro5,
odor5,
ordo5,
rood5,
3 letter words:
kob9,
kor7,
bod6,
bud6,
dub6,
boo5,
bro5,
bur5,
orb5,
rob5,
rub5,
urb5,
dor4,
duo4,
oud4,
rod4,
udo4,
urd4,
our3,
2 letter words:
bo4,
do3,
od3,
or2,