C313131323331311331322331322331311211331323331313331323331323132322331121   >>    C31313132333131133132233132233131121133132333131333132333132313232233112   <<    C313131323331311331322331322331311211331323331313331323331323132322331123   >>      C313131323331311331322331322331311211331323331313331323331323132322331122   >>