第六类问题给出很少信息，实际上不给出信息。

The last problem type has very little information that's is given, in fact, there is none.

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该凝胶作为第六类应用而用于自第15日开始的其他日子。

The gel was used on alternate days starting on day 15 for 6 applications.

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他进入了瑞士卡丁车在11岁以下，放在了他的第一年迷你第六类整体。

He entered Swiss go-karting at the age of 11 and placed sixth overall in the Mini category in his first year.

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