9 letter words:
backboard20,
6 letter words:
aboard9,
abroad9,
5 letter words:
aback13,
babka13,
brock13,
kabab13,
kabob13,
cabob11,
croak11,
kabar11,
barca9,
carbo9,
carob9,
cobra9,
board8,
broad8,
dobra8,
4 letter words:
back12,
bock12,
dock11,
bark10,
bork10,
cark10,
cobb10,
cork10,
kbar10,
rack10,
rock10,
dark9,
dork9,
abba8,
arak8,
baba8,
barb8,
carb8,
crab8,
kora8,
okra8,
bard7,
brad7,
card7,
coda7,
cord7,
darb7,
drab7,
arco6,
boar6,
bora6,
orca6,
orad5,
road5,
3 letter words:
kab9,
kob9,
dak8,
ark7,
bob7,
cab7,
cob7,
koa7,
kor7,
oak7,
oka7,
bad6,
bod6,
cad6,
cod6,
dab6,
doc6,
aba5,
abo5,
arb5,
arc5,
baa5,
bar5,
boa5,
bra5,
bro5,
car5,
cor5,
oba5,
oca5,
orb5,
orc5,
rob5,
roc5,
ado4,
dor4,
oda4,
rad4,
rod4,
oar3,
ora3,
2 letter words:
ka6,
ab4,
ba4,
bo4,
ad3,
do3,
od3,
aa2,
ar2,
or2,