7 letter words:
pitprop13,
6 letter words:
poppit12,
4 letter words:
prop8,
ripp8,
port6,
ript6,
topi6,
trip6,
trop6,
riot4,
roti4,
tiro4,
tori4,
trio4,
3 letter words:
pip7,
pop7,
opt5,
pir5,
pit5,
poi5,
pot5,
pro5,
rip5,
tip5,
top5,
ort3,
rit3,
rot3,
tor3,
2 letter words:
op4,
pi4,
po4,
io2,
it2,
oi2,
or2,
ti2,
to2,