6 letter words:
filter9,
lifter9,
trifle9,
5 letter words:
filer8,
filet8,
flier8,
flirt8,
flite8,
lifer8,
refit8,
rifle8,
liter5,
litre5,
relit5,
tiler5,
4 letter words:
felt7,
file7,
fire7,
flir7,
flit7,
fret7,
frit7,
left7,
lief7,
life7,
lift7,
reft7,
reif7,
rife7,
rift7,
tref7,
lier4,
lire4,
lite4,
riel4,
rile4,
rite4,
tier4,
tile4,
tire4,
tirl4,
3 letter words:
eft6,
elf6,
fer6,
fet6,
fie6,
fil6,
fir6,
fit6,
ref6,
rif6,
ire3,
lei3,
let3,
lie3,
lit3,
rei3,
ret3,
tel3,
tie3,
til3,
2 letter words:
ef5,
fe5,
if5,
el2,
er2,
et2,
it2,
li2,
re2,
ti2,