C111123313121111121111331333133313331323231333133313112121111331333131212131   >>    C11112331312111112111133133313331333132323133313331311212111133133313121213   <<    C111123313121111121111331333133313331323231333133313112121111331333131212133   >>      C111123313121111121111331333133313331323231333133313112121111331333131212132   >>