8 letter words:
toxocara17,
6 letter words:
oxcart15,
5 letter words:
taxor12,
actor7,
carat7,
carta7,
taroc7,
aorta5,
ratoo5,
4 letter words:
coax13,
coxa13,
taxa11,
acta6,
arco6,
atoc6,
cart6,
coat6,
coot6,
octa6,
orca6,
raca6,
taco6,
toco6,
torc6,
rata4,
rato4,
root4,
rota4,
roto4,
tara4,
taro4,
tora4,
toro4,
3 letter words:
cox12,
oxo10,
rax10,
tax10,
act5,
arc5,
caa5,
car5,
cat5,
coo5,
cor5,
cot5,
oca5,
orc5,
roc5,
toc5,
art3,
oar3,
oat3,
oor3,
oot3,
ora3,
ort3,
rat3,
roo3,
rot3,
tao3,
tar3,
too3,
tor3,
2 letter words:
ax9,
ox9,
aa2,
ar2,
at2,
oo2,
or2,
ta2,
to2,
