C1111233131211111211113313331333133313232313331333133313331311313331323331   >>    C111123313121111121111331333133313331323231333133313331333131131333132333   <<    C1111233131211111211113313331333133313232313331333133313331311313331323333   >>      C1111233131211111211113313331333133313232313331333133313331311313331323332   >>