/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
	    String text = "um2tres4cinco6sete8";
 
		String regex = "[0-9]";
 
		Pattern p = Pattern.compile(regex);
		Matcher m = p.matcher(text);
 
		while(m.find()){
			System.out.println(m.group());
		}
		System.out.println("Total de grupos: " + m.groupCount());
	}
}

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