C1111233131211111211113313331333133313331333133313331333133311213231323331   >>    C111123313121111121111331333133313331333133313331333133313331121323132333   <<    C1111233131211111211113313331333133313331333133313331333133311213231323333   >>      C1111233131211111211113313331333133313331333133313331333133311213231323332   >>