C313131323331311331322331322331311211331323132333132313231333111   >>    C31313132333131133132233132233131121133132313233313231323133311   <<    C313131323331311331322331322331311211331323132333132313231333113   >>      C313131323331311331322331322331311211331323132333132313231333112   >>