sieve.png

  ______ _____  _____ ______ ______
 |  ____/ ____|/ ____|  ____|___  /
 | |__ | |    | (___ | |__     / / 
 |  __|| |     \___ \|  __|   / /  
 | |   | |____ ____) | |     / /__ 
 |_|    \_____|_____/|_|    /_____|