7 letter words:
firings11,
6 letter words:
firing10,
rising7,
siring7,
5 letter words:
frigs9,
finis8,
firns8,
girns6,
grins6,
iring6,
rings6,
4 letter words:
figs8,
frig8,
fins7,
firn7,
firs7,
rifs7,
gins5,
girn5,
grin5,
rigs5,
ring5,
sign5,
sing5,
iris4,
nisi4,
rins4,
3 letter words:
fig7,
fin6,
fir6,
ifs6,
rif6,
gin4,
rig4,
ins3,
rin3,
sin3,
sir3,
sri3,
2 letter words:
if5,
in2,
is2,
si2,