import java.util.regex.Matcher; 
import java.util.regex.Pattern;
import java.util.*;
import java.lang.*;
import java.io.*;
 
class Ideone
{
    public static void main (String[] args) throws java.lang.Exception
    {
        // your code goes here
        String in = "111111111111111";
        Pattern p = Pattern.compile("1(?=1111)");
        Matcher m = p.matcher(in);
        while (m.find()) {
 
            System.out.print(m.start() + " ");
 
        }
 
    }
}

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