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, 147 P)

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

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Mathematics-related lists‎ (10 C, 225 P)

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

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Mathematics‎ (25 C, 5 P)