6 letter words:
enserf9,
5 letter words:
feens8,
feers8,
feres8,
ferns8,
frees8,
reefs8,
sefer8,
ernes5,
reens5,
sneer5,
4 letter words:
feen7,
feer7,
fees7,
fens7,
fere7,
fern7,
free7,
nefs7,
reef7,
refs7,
serf7,
enes4,
eres4,
erne4,
erns4,
esne4,
reen4,
rees4,
rens4,
seen4,
seer4,
sene4,
sere4,
snee4,
3 letter words:
efs6,
erf6,
fee6,
fen6,
fer6,
fes6,
nef6,
ref6,
een3,
ene3,
ens3,
ere3,
ern3,
ers3,
nee3,
ree3,
ren3,
res3,
see3,
sen3,
ser3,
2 letter words:
ef5,
fe5,
ee2,
en2,
er2,
es2,
ne2,
re2,