8 letter words:
filibegs14,
7 letter words:
filibeg13,
6 letter words:
bilges9,
5 letter words:
bilge8,
files8,
flies8,
gibes8,
biles7,
sigil6,
4 letter words:
fibs9,
figs8,
begs7,
bigs7,
file7,
fils7,
gibe7,
gibs7,
glib7,
lief7,
life7,
seif7,
self7,
bels6,
bile6,
bise6,
ibis6,
libs6,
egis5,
gels5,
gies5,
legs5,
isle4,
leis4,
lies4,
3 letter words:
fib8,
fig7,
beg6,
big6,
efs6,
elf6,
fes6,
fie6,
fil6,
gib6,
ifs6,
bel5,
bes5,
bis5,
lib5,
sib5,
gel4,
gie4,
leg4,
seg4,
els3,
lei3,
les3,
lie3,
lis3,
sei3,
sel3,
2 letter words:
ef5,
fe5,
if5,
be4,
bi4,
el2,
es2,
is2,
li2,
si2,
