6 letter words:
biffed15,
5 letter words:
fifed12,
4 letter words:
biff12,
diff11,
fief10,
fife10,
defi8,
deif8,
bide7,
dieb7,
3 letter words:
eff9,
iff9,
fib8,
def7,
dif7,
fed7,
fid7,
bed6,
bid6,
deb6,
dib6,
fie6,
dei4,
die4,
ide4,
2 letter words:
ef5,
fe5,
if5,
be4,
bi4,
de3,
di3,
ed3,
id3,
