C1111233131211111211113313331333133313232313331333133313132113321   >>    C111123313121111121111331333133313331323231333133313331313211332   <<    C1111233131211111211113313331333133313232313331333133313132113323   >>      C1111233131211111211113313331333133313232313331333133313132113322   >>