4 letter words:
port6,
pott6,
ript6,
tipt6,
topi6,
trip6,
trop6,
riot4,
ritt4,
roti4,
tiro4,
toit4,
tori4,
tort4,
trio4,
trot4,
3 letter words:
opt5,
pir5,
pit5,
poi5,
pot5,
pro5,
rip5,
tip5,
top5,
ort3,
rit3,
rot3,
tit3,
tor3,
tot3,
2 letter words:
op4,
pi4,
po4,
io2,
it2,
oi2,
or2,
ti2,
to2,