7 letter words:
flenser10,
fresnel10,
6 letter words:
enserf9,
fleers9,
flense9,
refels9,
5 letter words:
feels8,
feres8,
ferns8,
fleer8,
flees8,
frees8,
reefs8,
refel8,
ernes5,
leers5,
lenes5,
lense5,
reels5,
sneer5,
4 letter words:
feel7,
fees7,
fens7,
fere7,
fern7,
flee7,
free7,
reef7,
refs7,
self7,
serf7,
eels4,
else4,
erne4,
erns4,
esne4,
leer4,
lees4,
lens4,
reel4,
rees4,
seel4,
seen4,
seer4,
sene4,
sere4,
3 letter words:
efs6,
elf6,
fee6,
fen6,
fer6,
fes6,
ref6,
eel3,
els3,
ens3,
ere3,
ern3,
ers3,
lee3,
les3,
nee3,
ree3,
res3,
see3,
sel3,
sen3,
ser3,
2 letter words:
ef5,
fe5,
el2,
en2,
er2,
es2,
ne2,
re2,