import java.util.*;
import java.lang.*;
import java.io.*;

class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String strings[] = {"Aisha256", "ai_sha256", "test123", "84test", "test md5", "sha256", "word two sha1", "w0rd", "test_md5", "sha256", "md5"};
		for (String str : strings){
			System.out.println(str.replaceAll("(?<!\\d|^)(?<!(?<![^\\W_])(?:sha|md))(?=\\d)|(?<=\\d)(?!\\d|$)|_", " "));
		}
	}
}