7 letter words:
differs14,
6 letter words:
differ13,
riffed13,
fifers12,
5 letter words:
diffs12,
fifed12,
fiefs11,
fifer11,
fifes11,
riffs11,
defis9,
fired9,
fried9,
fiers8,
fires8,
fries8,
frise8,
reifs8,
serif8,
dries6,
resid6,
rides6,
sider6,
sired6,
4 letter words:
diff11,
effs10,
fief10,
fife10,
riff10,
defi8,
deif8,
difs8,
feds8,
fids8,
feis7,
fier7,
fire7,
firs7,
fris7,
refs7,
reif7,
rife7,
rifs7,
seif7,
serf7,
desi5,
dies5,
dire5,
ides5,
ired5,
reds5,
ride5,
rids5,
side5,
ires4,
reis4,
rise4,
seir4,
sire4,
3 letter words:
eff9,
iff9,
def7,
dif7,
fed7,
fid7,
efs6,
erf6,
fer6,
fes6,
fie6,
fir6,
ifs6,
ref6,
rif6,
sif6,
dei4,
die4,
dis4,
eds4,
ide4,
ids4,
red4,
rid4,
sed4,
ers3,
ire3,
rei3,
res3,
sei3,
ser3,
sir3,
sri3,
2 letter words:
ef5,
fe5,
if5,
de3,
di3,
ed3,
id3,
er2,
es2,
is2,
re2,
si2,