9 letter words:
impromptu17,
7 letter words:
optimum13,
protium11,
6 letter words:
prompt12,
import10,
5 letter words:
primp11,
opium9,
primo9,
tromp9,
trump9,
tumor7,
4 letter words:
mump10,
pimp10,
pomp10,
pump10,
momi8,
prim8,
prom8,
prop8,
romp8,
rump8,
tump8,
mort6,
omit6,
port6,
pour6,
pout6,
ptui6,
puri6,
roup6,
topi6,
trim6,
trip6,
trop6,
riot4,
roti4,
rout4,
tiro4,
tori4,
tour4,
trio4,
3 letter words:
imp7,
mim7,
mom7,
mop7,
mum7,
pip7,
pom7,
pop7,
pup7,
umm7,
ump7,
mir5,
mor5,
mot5,
mut5,
opt5,
pit5,
piu5,
poi5,
pot5,
pro5,
pur5,
put5,
rim5,
rip5,
rom5,
rum5,
tip5,
tom5,
top5,
tup5,
upo5,
urp5,
ort3,
our3,
out3,
rot3,
rut3,
tor3,
tui3,
2 letter words:
mm6,
mi4,
mo4,
mu4,
om4,
op4,
pi4,
um4,
up4,
it2,
oi2,
or2,
ti2,
to2,
ut2,