5 letter words:
finis8,
4 letter words:
sizy16,
zins13,
fibs9,
inby9,
fini7,
fins7,
yins7,
bins6,
ibis6,
nibs6,
snib6,
nisi4,
3 letter words:
fiz15,
biz14,
zin12,
bys8,
fib8,
fin6,
ifs6,
nys6,
sif6,
sny6,
syn6,
yin6,
bin5,
bis5,
nib5,
sib5,
ins3,
nis3,
sin3,
2 letter words:
fy8,
by7,
if5,
ny5,
bi4,
in2,
is2,
si2,