6 letter words:
niffer12,
riffle12,
5 letter words:
fifer11,
elfin8,
filer8,
finer8,
flier8,
infer8,
lifer8,
rifle8,
liner5,
4 letter words:
fief10,
fife10,
riff10,
fern7,
file7,
fine7,
fire7,
firn7,
flir7,
lief7,
life7,
neif7,
reif7,
rife7,
lien4,
lier4,
line4,
lire4,
rein4,
riel4,
rile4,
3 letter words:
eff9,
iff9,
elf6,
fen6,
fer6,
fie6,
fil6,
fin6,
fir6,
ref6,
rif6,
ern3,
ire3,
lei3,
lie3,
lin3,
nil3,
rei3,
rin3,
2 letter words:
ef5,
fe5,
if5,
el2,
en2,
er2,
in2,
li2,
ne2,
re2,