C1111233131211111211113313331333133313331312211113313331311331333122331   >>    C111123313121111121111331333133313331333131221111331333131133133312233   <<    C1111233131211111211113313331333133313331312211113313331311331333122333   >>      C1111233131211111211113313331333133313331312211113313331311331333122332   >>