Gumená redukcia

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