5 letter words:
morph12,
humor10,
mohur10,
opium9,
primo9,
houri8,
4 letter words:
hump11,
mump10,
ouph9,
momi8,
prim8,
prom8,
romp8,
rump8,
hour7,
pour6,
puri6,
roup6,
3 letter words:
hmm10,
him8,
hip8,
hop8,
hum8,
hup8,
mho8,
ohm8,
phi8,
poh8,
imp7,
mim7,
mom7,
mop7,
mum7,
pom7,
umm7,
ump7,
rho6,
mir5,
mor5,
piu5,
poi5,
pro5,
pur5,
rim5,
rip5,
rom5,
rum5,
upo5,
urp5,
our3,
2 letter words:
hm7,
mm6,
hi5,
ho5,
oh5,
uh5,
mi4,
mo4,
mu4,
om4,
op4,
pi4,
um4,
up4,
oi2,
or2,