C23131111222331311211331323111133132233132313331323331323223313222333131   >>    C2313111122233131121133132311113313223313231333132333132322331322233313   <<    C23131111222331311211331323111133132233132313331323331323223313222333133   >>      C23131111222331311211331323111133132233132313331323331323223313222333132   >>