C1111233131211111211113313231333133313331323331333133313221311311   >>    C111123313121111121111331323133313331333132333133313331322131131   <<    C1111233131211111211113313231333133313331323331333133313221311313   >>      C1111233131211111211113313231333133313331323331333133313221311312   >>