C11112331333132311331333132313331323132313232233132313331311331123313111   >>    C1111233133313231133133313231333132313231323223313231333131133112331311   <<    C11112331333132311331333132313331323132313232233132313331311331123313113   >>      C11112331333132311331333132313331323132313232233132313331311331123313112   >>