C313131323331311331322331322331311211331323331313331323331323132313223131   >>    C31313132333131133132233132233131121133132333131333132333132313231322313   <<    C313131323331311331322331322331311211331323331313331323331323132313223133   >>      C313131323331311331322331322331311211331323331313331323331323132313223132   >>