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The teams that end as number 11 and 12 relegate to the Nationalliga B. Nationalliga A teams 2010 – 11 Ordered by 2009 – 10 results Format Starting with the 2010 – 11 season , a play-off system was adopted .
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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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