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what materials are used to make a pencil what materials are used to make a pencil case what materials are needed to make a pencil what raw materials are used to make a pencil what materials are used to make mechanical pencils what raw materials are needed to make a pencil which materials are used to make pencil lead what materials were originally used to make the pencil what materials can be used to make a pencil holder/box what materials are used to make a pen
