8 letter words:
borrower13,
reborrow13,
6 letter words:
borrow11,
5 letter words:
bower10,
rower8,
wooer8,
borer7,
error5,
4 letter words:
bowr9,
brew9,
brow9,
ower7,
owre7,
wero7,
wore7,
boor6,
bore6,
brer6,
broo6,
brrr6,
oboe6,
robe6,
rore4,
3 letter words:
bow8,
web8,
owe6,
rew6,
row6,
woe6,
woo6,
boo5,
bor5,
bro5,
brr5,
obe5,
obo5,
orb5,
reb5,
rob5,
err3,
oor3,
ore3,
reo3,
roe3,
roo3,
2 letter words:
ow5,
we5,
wo5,
be4,
bo4,
ob4,
er2,
oe2,
oo2,
or2,
re2,