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#similar #alike #resemblance #matching #identical items #likeness #comparison #same type

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#four matches #complete set #pattern matching #all correct #four checks #identical items

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#sum #identical items #basic math #combine #variables #generic

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#similar items #identical items #copies #matching set #resemblance #object similarity

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#remove duplicate #delete duplicate #deduplicate #identical items #eliminate copy #cross out

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#identical items #sum #combine #basic math #symbolic representation