6 letter words:
duffel13,
duffle13,
luffed13,
dueful10,
fulled10,
5 letter words:
flued9,
4 letter words:
duff11,
luff10,
delf8,
feud8,
fled8,
fell7,
flue7,
fuel7,
full7,
dell5,
duel5,
dule5,
dull5,
leud5,
lude5,
lulu4,
3 letter words:
eff9,
def7,
fed7,
fud7,
elf6,
feu6,
flu6,
del4,
due4,
eld4,
led4,
lud4,
ell3,
leu3,
ule3,
ulu3,
2 letter words:
ef5,
fe5,
de3,
ed3,
el2,