5 letter words:
felts8,
lefts8,
4 letter words:
efts7,
elfs7,
felt7,
fest7,
fets7,
left7,
self7,
tefs7,
elts4,
lest4,
lets4,
tels4,
3 letter words:
efs6,
eft6,
elf6,
fes6,
fet6,
tef6,
els3,
elt3,
est3,
les3,
let3,
sel3,
set3,
tel3,
tes3,
2 letter words:
ef5,
fe5,
el2,
es2,
et2,
st2,
te2,