6 letter words:
sexfid17,
5 letter words:
fixed16,
fixes15,
defis9,
4 letter words:
defi8,
deif8,
difs8,
feds8,
fids8,
feis7,
seif7,
desi5,
dies5,
ides5,
side5,
3 letter words:
fix13,
dex11,
sex10,
six10,
xis10,
def7,
dif7,
fed7,
fid7,
efs6,
fes6,
fie6,
ifs6,
sif6,
dei4,
die4,
dis4,
eds4,
ide4,
ids4,
sed4,
sei3,
2 letter words:
ex9,
xi9,
ef5,
fe5,
if5,
de3,
di3,
ed3,
id3,
es2,
is2,
si2,