4 letter words:
pork10,
port6,
topi6,
trip6,
trop6,
riot4,
roti4,
tiro4,
tori4,
trio4,
3 letter words:
kip9,
kop9,
irk7,
kir7,
kit7,
koi7,
kor7,
opt5,
pit5,
poi5,
pot5,
pro5,
rip5,
tip5,
top5,
ort3,
rot3,
tor3,
2 letter words:
ki6,
op4,
pi4,
it2,
oi2,
or2,
ti2,
to2,