9 letter words:
infilling13,
7 letter words:
filling11,
nilling8,
6 letter words:
filing10,
fining10,
infill9,
lignin7,
lining7,
5 letter words:
fling9,
linin5,
4 letter words:
fill7,
fini7,
gill5,
ginn5,
ling5,
linn4,
nill4,
3 letter words:
fig7,
gif7,
fil6,
fin6,
gin4,
lig4,
ill3,
inn3,
lin3,
nil3,
2 letter words:
if5,
gi3,
in2,
li2,
