sieve.png

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