Redukcia13/7-pólová

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   ___  / ___|  | __ )  __  __  / /_   | |__  
  / __| \___ \  |  _ \  \ \/ / | '_ \  | '_ \ 
 | (__   ___) | | |_) |  >  <  | (_) | | |_) |
  \___| |____/  |____/  /_/\_\  \___/  |_.__/