5 letter words:
beefs10,
feebs10,
feers8,
feres8,
frees8,
reefs8,
sefer8,
beers7,
beres7,
brees7,
4 letter words:
beef9,
feeb9,
feer7,
fees7,
fere7,
free7,
reef7,
refs7,
serf7,
beer6,
bees6,
bere6,
bree6,
rebs6,
eres4,
rees4,
seer4,
sere4,
3 letter words:
efs6,
erf6,
fee6,
fer6,
fes6,
ref6,
bee5,
bes5,
reb5,
ere3,
ers3,
ree3,
res3,
see3,
ser3,
2 letter words:
ef5,
fe5,
be4,
ee2,
er2,
es2,
re2,