7 letter words:
fuguist11,
5 letter words:
fugus9,
gifts9,
4 letter words:
figs8,
fugs8,
fugu8,
gift8,
fist7,
fits7,
sift7,
gist5,
gits5,
gust5,
guts5,
tugs5,
suit4,
tuis4,
3 letter words:
fig7,
fug7,
fit6,
ifs6,
git4,
gut4,
tug4,
its3,
sit3,
tis3,
tui3,
uts3,
2 letter words:
if5,
is2,
it2,
si2,
ti2,
us2,
ut2,
