C111123313121111121111331333133313331323231333133313311232313221111   >>    C11112331312111112111133133313331333132323133313331331123231322111   <<    C111123313121111121111331333133313331323231333133313311232313221113   >>      C111123313121111121111331333133313331323231333133313311232313221112   >>