C313131323331311331322331322331311211331323132311113313231333132321123111   >>    C31313132333131133132233132233131121133132313231111331323133313232112311   <<    C313131323331311331322331322331311211331323132311113313231333132321123113   >>      C313131323331311331322331322331311211331323132311113313231333132321123112   >>