C111123313121111121111331333133313331323232133113313231333133313112211212311   >>    C11112331312111112111133133313331333132323213311331323133313331311221121231   <<    C111123313121111121111331333133313331323232133113313231333133313112211212313   >>      C111123313121111121111331333133313331323232133113313231333133313112211212312   >>