C1111233131211111211113313331333133313232313331333133313331312312233111   >>    C111123313121111121111331333133313331323231333133313331333131231223311   <<    C1111233131211111211113313331333133313232313331333133313331312312233113   >>      C1111233131211111211113313331333133313232313331333133313331312312233112   >>