7 letter words:
refines10,
eserine7,
6 letter words:
enserf9,
ferine9,
frisee9,
infers9,
refine9,
nereis6,
reseen6,
seiner6,
serein6,
serene6,
serine6,
5 letter words:
feres8,
ferns8,
finer8,
fines8,
fires8,
firns8,
frees8,
fries8,
frise8,
infer8,
neifs8,
reefs8,
reifs8,
serif8,
eerie5,
ernes5,
reins5,
resee5,
resin5,
rinse5,
risen5,
seine5,
serin5,
siree5,
siren5,
sneer5,
4 letter words:
fees7,
fens7,
fere7,
fern7,
fine7,
fins7,
fire7,
firn7,
firs7,
free7,
neif7,
reef7,
refs7,
reif7,
rife7,
rifs7,
seif7,
serf7,
erne4,
erns4,
esne4,
ires4,
rees4,
rein4,
reis4,
rins4,
rise4,
seen4,
seer4,
sene4,
sere4,
sine4,
sire4,
3 letter words:
efs6,
fee6,
fen6,
fer6,
fes6,
fie6,
fin6,
fir6,
ifs6,
ref6,
rif6,
ens3,
ere3,
ern3,
ers3,
ins3,
ire3,
nee3,
ree3,
rei3,
res3,
rin3,
see3,
sei3,
sen3,
ser3,
sin3,
sir3,
sri3,
2 letter words:
ef5,
fe5,
if5,
en2,
er2,
es2,
in2,
is2,
ne2,
re2,
si2,