8 letter words:
fishgigs16,
7 letter words:
fishgig15,
fisgigs12,
6 letter words:
fisgig11,
5 letter words:
sighs9,
4 letter words:
fish10,
figs8,
ghis8,
sigh8,
hiss7,
gigs6,
iggs6,
3 letter words:
fig7,
ghi7,
gif7,
his6,
ifs6,
ish6,
sif6,
gig5,
igg5,
gis4,
sis3,
2 letter words:
hi5,
if5,
sh5,
gi3,
is2,
si2,