C11111333133313232233133313331333132313331323321313331333131131211111133123111   >>    C1111133313331323223313331333133313231333132332131333133313113121111113312311   <<    C11111333133313232233133313331333132313331323321313331333131131211111133123113   >>      C11111333133313232233133313331333132313331323321313331333131131211111133123112   >>