C1111233131211111211113313331333131211111132233133313331323113233131   >>    C111123313121111121111331333133313121111113223313331333132311323313   <<    C1111233131211111211113313331333131211111132233133313331323113233133   >>      C1111233131211111211113313331333131211111132233133313331323113233132   >>