7 letter words:
reprobe11,
enrober9,
6 letter words:
prober10,
boreen8,
enrobe8,
opener8,
pereon8,
perron8,
rebore8,
reborn8,
reopen8,
5 letter words:
probe9,
rebop9,
boner7,
borer7,
borne7,
preen7,
prone7,
repro7,
roper7,
4 letter words:
beep8,
been6,
beer6,
bene6,
bone6,
bore6,
born6,
bree6,
bren6,
ebon6,
neep6,
nope6,
open6,
peen6,
peer6,
peon6,
pere6,
pone6,
pore6,
porn6,
pree6,
repo6,
robe6,
rope6,
erne4,
3 letter words:
bop7,
bee5,
ben5,
bro5,
brr5,
neb5,
nob5,
obe5,
ope5,
orb5,
pee5,
pen5,
per5,
pro5,
reb5,
rep5,
rob5,
eon3,
ere3,
ern3,
err3,
nee3,
nor3,
one3,
ore3,
ree3,
roe3,
2 letter words:
be4,
bo4,
op4,
pe4,
en2,
er2,
ne2,
no2,
oe2,
on2,
or2,
re2,