6 letter words:
berret8,
rebore8,
retore6,
retree6,
5 letter words:
beret7,
boree7,
borer7,
breer7,
brere7,
retro5,
4 letter words:
beer6,
beet6,
bere6,
bete6,
boet6,
bore6,
bort6,
bree6,
brer6,
robe6,
rete4,
rore4,
rort4,
rote4,
teer4,
tore4,
torr4,
tree4,
3 letter words:
bee5,
bet5,
bor5,
bot5,
bro5,
brr5,
obe5,
orb5,
reb5,
rob5,
ere3,
err3,
ore3,
ort3,
ree3,
reo3,
ret3,
roe3,
rot3,
tee3,
toe3,
tor3,
2 letter words:
be4,
bo4,
ob4,
ee2,
er2,
et2,
oe2,
or2,
re2,
te2,
to2,