8 letter words:
workbook21,
5 letter words:
wrick14,
brick13,
brock13,
brook11,
crook11,
boric9,
iroko9,
4 letter words:
kick14,
wick13,
bock12,
kirk12,
kook12,
work11,
birk10,
book10,
bork10,
cook10,
cork10,
kobo10,
rick10,
rock10,
brow9,
crow9,
crib8,
rook8,
biro6,
boor6,
brio6,
broo6,
coir6,
3 letter words:
wok10,
ick9,
kob9,
bow8,
cow8,
cob7,
irk7,
kir7,
koi7,
kor7,
row6,
woo6,
bio5,
boo5,
bro5,
coo5,
cor5,
obi5,
orb5,
orc5,
rib5,
rob5,
roc5,
2 letter words:
ki6,
ow5,
wo5,
bi4,
bo4,
oi2,
or2,