6 letter words:
fisher12,
sherif12,
5 letter words:
fresh11,
fiers8,
fires8,
fries8,
frise8,
heirs8,
hires8,
reifs8,
rhies8,
serif8,
shier8,
shire8,
4 letter words:
fehs10,
fish10,
eish7,
feis7,
fier7,
fire7,
firs7,
fris7,
heir7,
hers7,
hies7,
hire7,
refs7,
rehs7,
reif7,
resh7,
rife7,
rifs7,
seif7,
serf7,
shir7,
shri7,
ires4,
reis4,
rise4,
seir4,
sire4,
3 letter words:
feh9,
efs6,
ehs6,
erf6,
fer6,
fes6,
fie6,
fir6,
her6,
hes6,
hie6,
his6,
ifs6,
ish6,
ref6,
reh6,
rif6,
she6,
sif6,
ers3,
ire3,
rei3,
res3,
sei3,
ser3,
sir3,
sri3,
2 letter words:
ef5,
eh5,
fe5,
he5,
hi5,
if5,
sh5,
er2,
es2,
is2,
re2,
si2,