6 letter words:
binits8,
5 letter words:
binit7,
bints7,
intis5,
4 letter words:
bins6,
bint6,
bist6,
bits6,
ibis6,
nibs6,
snib6,
inti4,
isit4,
nisi4,
nits4,
snit4,
tins4,
3 letter words:
bin5,
bis5,
bit5,
nib5,
sib5,
ins3,
its3,
nis3,
nit3,
sin3,
sit3,
tin3,
tis3,
2 letter words:
bi4,
in2,
is2,
it2,
si2,
st2,
ti2,