import java.util.*;
import java.lang.*;
import java.io.*;

class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String[] arr = {"Loh", "Pidr", null, "Zalupa", null, "Eblo", "Parasha", null};
        Arrays.sort(arr, (Object o1, Object o2) -> {
            if (o1 == null && o2 != null) {
                return 1;
            }
            if (o1 != null && o2 == null) {
                return -1;
            }
            return 0;
        });
        System.out.println(Arrays.toString(arr)); 
	}
}