C11111333133313232233133313331333132313331323321313331333131211111231311   >>    C1111133313331323223313331333133313231333132332131333133313121111123131   <<    C11111333133313232233133313331333132313331323321313331333131211111231313   >>      C11111333133313232233133313331333132313331323321313331333131211111231312   >>