7 letter words:
berserk13,
6 letter words:
breeks12,
5 letter words:
berks11,
kerbs11,
esker9,
reeks9,
beers7,
brees7,
serer5,
4 letter words:
berk10,
kerb10,
ekes8,
reek8,
seek8,
skee8,
beer6,
bees6,
bree6,
rebs6,
errs4,
rees4,
seer4,
sere4,
3 letter words:
eek7,
eke7,
bee5,
bes5,
brr5,
reb5,
ere3,
err3,
ers3,
ree3,
res3,
see3,
ser3,
2 letter words:
be4,
er2,
es2,
re2,