/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone {
	static String in = "Abdul Haris Ilmawan";
 
	public static void main (String[] args) throws java.lang.Exception {
		substrings(4, 4);
	}
 
	public static void substrings(int start, int end){
        if (start == in.length() && end == in.length()) {
            return;
        } else {
            if (end == in.length()+1) {
                substrings(start+1,start+1);
            } else {
                System.out.println(in.substring(start, end));
                substrings(start, end+1);
            }
        }
    }
}

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