5 letter words:
fairs8,
fiars8,
firns8,
infra8,
naifs8,
snarf8,
airns5,
naris5,
rains5,
ranis5,
sarin5,
4 letter words:
arfs7,
fain7,
fair7,
fans7,
fiar7,
fins7,
firn7,
firs7,
naif7,
rifs7,
ains4,
airn4,
airs4,
anis4,
rain4,
rais4,
rani4,
rias4,
rins4,
sain4,
sari4,
3 letter words:
arf6,
fan6,
far6,
fas6,
fin6,
fir6,
ifs6,
rif6,
ain3,
air3,
ais3,
ani3,
ars3,
ins3,
rai3,
ran3,
ras3,
ria3,
rin3,
sin3,
sir3,
sri3,
2 letter words:
fa5,
if5,
ai2,
an2,
ar2,
as2,
in2,
is2,
na2,
si2,