C11112331312111112111133133313231333132313331333121111113313223313232333131211   >>    C1111233131211111211113313331323133313231333133312111111331322331323233313121   <<    C11112331312111112111133133313231333132313331333121111113313223313232333131213   >>      C11112331312111112111133133313231333132313331333121111113313223313232333131212   >>