9 letter words:
blockwork24,
7 letter words:
rowlock16,
5 letter words:
block13,
brock13,
brook11,
crook11,
brool7,
color7,
crool7,
4 letter words:
cowk13,
wock13,
bock12,
kook12,
work11,
boko10,
book10,
bork10,
cook10,
cork10,
kobo10,
lock10,
rock10,
blow9,
bowl9,
bowr9,
brow9,
clow9,
cowl9,
crow9,
bloc8,
kolo8,
koro8,
look8,
rook8,
wool7,
bolo6,
bool6,
boor6,
broo6,
cool6,
lobo6,
loco6,
obol6,
loor4,
3 letter words:
kow10,
wok10,
bok9,
kob9,
bow8,
cow8,
cob7,
kor7,
rok7,
low6,
owl6,
row6,
woo6,
boo5,
bor5,
bro5,
col5,
coo5,
cor5,
lob5,
obo5,
orb5,
orc5,
rob5,
roc5,
loo3,
lor3,
oor3,
roo3,
2 letter words:
ko6,
ow5,
wo5,
bo4,
ob4,
lo2,
oo2,
or2,