178937
Competition format The competition is contested by 32 clubs in a knock-out format where all rounds will be played over two legs and the away goals rule will be used , but in the first three rounds , if the away team won the first leg with an advantage of at least three goals , the second leg will not be played and the club will be automatically qualified to the next round .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 None