6 letter words:
rector8,
5 letter words:
corer7,
crore7,
recto7,
retro5,
4 letter words:
cero6,
cert6,
core6,
cote6,
torc6,
rore4,
rort4,
rote4,
tore4,
torr4,
3 letter words:
cor5,
cot5,
eco5,
orc5,
rec5,
roc5,
tec5,
toc5,
err3,
ore3,
ort3,
reo3,
ret3,
roe3,
rot3,
toe3,
tor3,
2 letter words:
er2,
et2,
oe2,
or2,
re2,
te2,
to2,