/* package whatever; // don't place package name! */
 
import java.util.*;
import java.util.regex.*;
import java.lang.*;
import java.io.*;
 
/* 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
	{
		// your code goes here
		 String test = "TEST1";
 
        Pattern p = Pattern.compile("([A-Z]{3,4})([0-9])");
 
        Matcher m = p.matcher(test);
        while (m.find()) {
            m.replaceAll(m.group(1) + "-" + m.group(2));
            System.out.println(m);
        }
        System.out.println(test);
	}
}

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