4 letter words:
afro7,
faro7,
fart7,
fora7,
fort7,
frat7,
raft7,
rato4,
rota4,
taro4,
tora4,
3 letter words:
aft6,
arf6,
far6,
fat6,
for6,
fra6,
fro6,
oaf6,
oft6,
orf6,
art3,
oar3,
oat3,
ora3,
ort3,
rat3,
rot3,
tao3,
tar3,
tor3,
2 letter words:
fa5,
of5,
ar2,
at2,
or2,
ta2,
to2,