User:Quiddity/sandbox

Equivalent to Lists of languages (list of lists), would be this category tree:

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Lists of languages (5 C, 54 P)

Equivalent to Lists of countries and territories (list of lists), would be this category tree:

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Lists of countries (15 C, 146 P)

Equivalent to Lists of mathematics topics (list of lists), would be this category tree:

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Mathematics-related lists (10 C, 224 P)

Equivalent to List of mathematics articles (index), would be this category tree:

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Mathematics (26 C, 4 P)