Gumená redukcia

  ____    ____                _  _     _   _    ____ 
 |  _ \  |___ \   _ __ ___   | || |   | | | |  / ___|
 | |_) |   __) | | '_ ` _ \  | || |_  | |_| | | |  _ 
 |  __/   / __/  | | | | | | |__   _| |  _  | | |_| |
 |_|     |_____| |_| |_| |_|    |_|   |_| |_|  \____|