6 letter words:
fieres9,
frisee9,
5 letter words:
feers8,
feres8,
fiere8,
fiers8,
fires8,
frees8,
fries8,
frise8,
reefs8,
reifs8,
sefer8,
serif8,
siree5,
4 letter words:
feer7,
fees7,
feis7,
fere7,
fier7,
fire7,
firs7,
free7,
fris7,
reef7,
refs7,
reif7,
rife7,
rifs7,
seif7,
serf7,
eres4,
ires4,
rees4,
reis4,
rise4,
seer4,
seir4,
sere4,
sire4,
3 letter words:
efs6,
erf6,
fee6,
fer6,
fes6,
fie6,
fir6,
ifs6,
ref6,
rif6,
sif6,
ere3,
ers3,
ire3,
ree3,
rei3,
res3,
see3,
sei3,
ser3,
sir3,
sri3,
2 letter words:
ef5,
fe5,
if5,
ee2,
er2,
es2,
is2,
re2,
si2,
