/* package whatever; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.regex.*;
/* 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 str = "this is#test_ :";
    	Pattern ptrn = Pattern.compile("(?<!\\p{Alnum})test(?!\\p{Alnum})");
    	Matcher matcher = ptrn.matcher(str);
    	while (matcher.find()) {
    		System.out.println(matcher.start());
    	}
	}
}