4 letter words:
prow9,
warp9,
wrap9,
wair7,
waur7,
pair6,
pour6,
prao6,
prau6,
proa6,
puri6,
roup6,
3 letter words:
waw9,
wow9,
paw8,
pow8,
wap8,
wop8,
raw6,
row6,
war6,
apo5,
par5,
pia5,
piu5,
poi5,
pro5,
pur5,
rap5,
rip5,
upo5,
urp5,
air3,
oar3,
ora3,
our3,
rai3,
ria3,
2 letter words:
aw5,
ow5,
wo5,
op4,
pa4,
pi4,
up4,
ai2,
ar2,
oi2,
or2,