8 letter words:
fernbird14,
6 letter words:
fibred12,
finder10,
friend10,
redfin10,
refind10,
binder9,
birder9,
birred9,
brined9,
inbred9,
rebind9,
briner8,
5 letter words:
brief10,
fiber10,
fibre10,
fiend9,
fined9,
fired9,
fried9,
bider8,
breid8,
bride8,
finer8,
firer8,
frier8,
infer8,
rebid8,
rifer8,
biner7,
brier7,
brine7,
diner6,
direr6,
drier6,
reird6,
rider6,
4 letter words:
frib9,
defi8,
deif8,
fend8,
find8,
bend7,
bide7,
bind7,
bird7,
bred7,
dieb7,
drib7,
feni7,
fern7,
fier7,
fine7,
fire7,
firn7,
neif7,
nief7,
nife7,
reif7,
rife7,
bein6,
beni6,
bien6,
bier6,
bine6,
birr6,
brei6,
bren6,
brer6,
brie6,
brin6,
deni5,
dern5,
dine5,
dire5,
ired5,
nerd5,
nide5,
nied5,
rend5,
ride5,
rind5,
rein4,
rine4,
3 letter words:
fib8,
def7,
dif7,
fed7,
fid7,
bed6,
bid6,
deb6,
dib6,
erf6,
fen6,
fer6,
fie6,
fin6,
fir6,
nef6,
ref6,
rif6,
ben5,
bin5,
brr5,
neb5,
nib5,
reb5,
rib5,
dei4,
den4,
die4,
din4,
end4,
ide4,
ned4,
nid4,
red4,
rid4,
ern3,
err3,
ire3,
nie3,
rei3,
ren3,
rin3,
2 letter words:
ef5,
fe5,
if5,
be4,
bi4,
de3,
di3,
ed3,
id3,
en2,
er2,
in2,
ne2,
re2,