C1111233131211111211113313231333133313331323331333131211113313331321311   >>    C111123313121111121111331323133313331333132333133313121111331333132131   <<    C1111233131211111211113313231333133313331323331333131211113313331321313   >>      C1111233131211111211113313231333133313331323331333131211113313331321312   >>