Aluminum Copper Zinc Iron Aluminum ×       Copper   ×     Zinc     ×   Iron       ×	Aluminum Copper Zinc Iron Aluminum ×       Copper   ×     Zinc     ×   Iron       ×
Aluminum Copper Zinc Iron Aluminum ×       Copper   ×     Zinc     ×   Iron       ×	Aluminum Copper Zinc Iron Aluminum ×       Copper   ×     Zinc     ×   Iron       ×