5 letter words:
roker9,
toker9,
troke9,
retro5,
4 letter words:
kero8,
keto8,
kore8,
roke8,
toke8,
trek8,
rore4,
rort4,
rote4,
tore4,
torr4,
3 letter words:
erk7,
ket7,
kor7,
oke7,
rok7,
err3,
ore3,
ort3,
reo3,
ret3,
roe3,
rot3,
toe3,
tor3,
2 letter words:
ko6,
er2,
et2,
oe2,
or2,
re2,
te2,
to2,