6 letter words:
births11,
briths11,
5 letter words:
birch12,
bitch12,
birth10,
brith10,
chits10,
stich10,
cribs9,
rishi8,
shirt8,
brits7,
crits7,
4 letter words:
chis9,
chit9,
ichs9,
itch9,
rich9,
crib8,
hist7,
hits7,
shit7,
shri7,
sith7,
thir7,
this7,
bits6,
bris6,
brit6,
cist6,
cris6,
crit6,
ibis6,
ribs6,
tics6,
iris4,
stir4,
3 letter words:
chi8,
hic8,
ich8,
his6,
hit6,
bis5,
bit5,
cis5,
rib5,
sib5,
sic5,
tic5,
its3,
sir3,
sit3,
sri3,
tis3,
2 letter words:
hi5,
sh5,
bi4,
is2,
it2,
si2,
ti2,