7 letter words:
rooftop12,
footrot10,
5 letter words:
proof10,
poort7,
potoo7,
potto7,
troop7,
torot5,
4 letter words:
poof9,
prof9,
foot7,
fort7,
roof7,
toft7,
poor6,
poot6,
port6,
pott6,
proo6,
roop6,
topo6,
trop6,
otto4,
root4,
roto4,
toot4,
toro4,
tort4,
trot4,
3 letter words:
fop8,
for6,
fro6,
oft6,
oof6,
orf6,
oop5,
opt5,
poo5,
pot5,
pro5,
top5,
oor3,
oot3,
ort3,
roo3,
rot3,
too3,
tor3,
tot3,
2 letter words:
of5,
op4,
po4,
oo2,
or2,
to2,