C111123313121111121111331333133313331323231333133313331333123311233133332211   >>    C11112331312111112111133133313331333132323133313331333133312331123313333221   <<    C111123313121111121111331333133313331323231333133313331333123311233133332213   >>      C111123313121111121111331333133313331323231333133313331333123311233133332212   >>