5 letter words:
robot7,
torot5,
4 letter words:
forb9,
foot7,
fort7,
roof7,
toft7,
boor6,
boot6,
bort6,
bott6,
broo6,
otto4,
root4,
roto4,
toot4,
toro4,
tort4,
trot4,
3 letter words:
fob8,
for6,
fro6,
oft6,
boo5,
bot5,
bro5,
orb5,
rob5,
oot3,
ort3,
rot3,
too3,
tor3,
tot3,
2 letter words:
of5,
bo4,
or2,
to2,