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Viktor Zubkov ( former Prime Minister ) and Igor Shuvalov were appointed First Deputy Prime Ministers , while Igor Sechin , Sergey Sobyanin , Alexander Zhukov , Sergei Ivanov and Alexei Kudrin received positions of Deputy Prime Ministers .
 Viktor Zubkov, Igor Shuvalov, Igor Sechin, Sergey Sobyanin, Alexander Zhukov, Sergei Ivanov, Alexei Kudrin
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Viktor Zubkov, Igor Shuvalov, Igor Sechin, Sergey Sobyanin, Alexander Zhukov, Sergei Ivanov, Alexei Kudrin