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There are two varieties of lingm : the dong lingm ( གད ང ག ངམ ; gdong-glingm ) , which is front-blown ; and the zur lingm ( ཟ ར ག ངམ ; zur-glingm ) , which is side-blown .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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