C1123132332111133131211113313331333132313231333133313232233132323311   >>    C112313233211113313121111331333133313231323133313331323223313232331   <<    C1123132332111133131211113313331333132313231333133313232233132323313   >>      C1123132332111133131211113313331333132313231333133313232233132323312   >>