C11111333133313232233133313331333132313331323321313331331123231211   >>    C1111133313331323223313331333133313231333132332131333133112323121   <<    C11111333133313232233133313331333132313331323321313331331123231213   >>      C11111333133313232233133313331333132313331323321313331331123231212   >>