C11112331312111112111133133313231333132313331333121111133313221322321331   >>    C1111233131211111211113313331323133313231333133312111113331322132232133   <<    C11112331312111112111133133313231333132313331333121111133313221322321333   >>      C11112331312111112111133133313231333132313331333121111133313221322321332   >>