C111123313121111121111331333133313331333131121133133313331333133313231123312311   >>    C11112331312111112111133133313331333133313112113313331333133313331323112331231   <<    C111123313121111121111331333133313331333131121133133313331333133313231123312313   >>      C111123313121111121111331333133313331333131121133133313331333133313231123312312   >>