12 letter words:
corroborator16,
6 letter words:
boocoo10,
carrot8,
trocar8,
orator6,
5 letter words:
bract9,
carbo9,
carob9,
cobra9,
abort7,
actor7,
arbor7,
boart7,
robot7,
taboo7,
tabor7,
taroc7,
rotor5,
4 letter words:
carb8,
crab8,
arco6,
boar6,
boat6,
boor6,
boot6,
bora6,
bort6,
bota6,
brat6,
broo6,
brrr6,
carr6,
cart6,
coat6,
coot6,
orca6,
taco6,
torc6,
orra4,
rato4,
roar4,
root4,
rota4,
roto4,
taro4,
tora4,
toro4,
torr4,
3 letter words:
cab7,
cob7,
abo5,
act5,
arb5,
arc5,
bar5,
bat5,
boa5,
boo5,
bot5,
bra5,
bro5,
brr5,
car5,
cat5,
coo5,
cor5,
cot5,
oba5,
oca5,
orb5,
orc5,
rob5,
roc5,
tab5,
art3,
oar3,
oat3,
oot3,
ora3,
ort3,
rat3,
rot3,
tao3,
tar3,
too3,
tor3,
2 letter words:
ab4,
ba4,
bo4,
ar2,
at2,
or2,
ta2,
to2,