C11112331312111112111133133313231333132313331333121111133313221322311   >>    C1111233131211111211113313331323133313231333133312111113331322132231   <<    C11112331312111112111133133313231333132313331333121111133313221322313   >>      C11112331312111112111133133313231333132313331333121111133313221322312   >>