C11111333133313232233133313331333133313231333133313331123131211   >>    C1111133313331323223313331333133313331323133313331333112313121   <<    C11111333133313232233133313331333133313231333133313331123131213   >>      C11111333133313232233133313331333133313231333133313331123131212   >>