C1111233131211111211113313331333131211111132233133313331323131323331323111   >>    C111123313121111121111331333133313121111113223313331333132313132333132311   <<    C1111233131211111211113313331333131211111132233133313331323131323331323113   >>      C1111233131211111211113313331333131211111132233133313331323131323331323112   >>