There are red, yellow, and blue pencils in the pencil case, and there are 4 pencils of each kind. How many pencils should be taken out at a time to ensure that there is at least one pencil of each color?
铅笔盒里有红、黄、蓝三种颜色的铅笔，每种铅笔各4支，问一次至少取出几只铅笔才能保证每种颜色的铅笔至少一支？
<gadget id="calculator">4 + 4</gadget>
<output>8</output>

<gadget id="calculator">8 + 1</gadget>
<output>9</output>

<result>9</result>