6 letter words:
breers8,
breres8,
sperre8,
5 letter words:
beeps9,
beers7,
beres7,
breer7,
brees7,
brere7,
brers7,
peers7,
peres7,
perse7,
prees7,
prese7,
speer7,
spree7,
serer5,
serre5,
4 letter words:
beep8,
beer6,
bees6,
bere6,
bree6,
brer6,
peer6,
pees6,
pere6,
pree6,
rebs6,
reps6,
seep6,
eres4,
errs4,
rees4,
seer4,
sere4,
serr4,
3 letter words:
bee5,
bes5,
brr5,
pee5,
per5,
pes5,
pre5,
reb5,
rep5,
ere3,
err3,
ers3,
ree3,
res3,
see3,
ser3,
2 letter words:
be4,
pe4,
ee2,
er2,
es2,
re2,