Gumená redukcia

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