Gumená redukcia

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