5 letter words:
probe9,
rebop9,
4 letter words:
boep8,
prob8,
bier6,
biro6,
bore6,
brei6,
brie6,
brio6,
peri6,
pier6,
pore6,
repo6,
ripe6,
robe6,
rope6,
3 letter words:
bop7,
bio5,
boi5,
bor5,
bro5,
obe5,
obi5,
ope5,
orb5,
per5,
pie5,
pir5,
poi5,
pre5,
pro5,
reb5,
rep5,
rib5,
rip5,
rob5,
ire3,
ore3,
rei3,
reo3,
roe3,
2 letter words:
be4,
bi4,
bo4,
ob4,
op4,
pe4,
pi4,
po4,
er2,
io2,
oe2,
oi2,
or2,
re2,