6 letter words:
octroi8,
5 letter words:
toric7,
4 letter words:
coir6,
coot6,
crit6,
otic6,
torc6,
riot4,
root4,
roti4,
roto4,
tiro4,
tori4,
toro4,
trio4,
3 letter words:
coo5,
cor5,
cot5,
orc5,
roc5,
tic5,
oot3,
ort3,
rot3,
too3,
tor3,
2 letter words:
it2,
oi2,
or2,
ti2,
to2,