import java.io.*;
import java.util.*;
import java.awt.geom.*;

/**
 * Solution to Xedni Drawkcab
 * 
 * @author vanb
 */
public class xedni_vanb
{
    public Scanner sc;
    public PrintStream ps;
        
    /**
     * Driver.
     * @throws Exception
     */
    public void doit() throws Exception
    {
        sc = new Scanner( System.in );
        ps = System.out;
        
        int n = sc.nextInt();
        String words[] = new String[n];
        for( int i=0; i<n; i++ )
        {
            String word = sc.next();
            words[i] = "";
            
            // Reverse the word
            for( char ch : word.toCharArray() ) words[i] = "" + ch + words[i];
        }
        
        // Sort'em
        Arrays.sort( words );
        
        // Print'em
        for( String word : words )
        {
            ps.println( word );
        }       
    }
    
    /**
     * @param args
     */
    public static void main( String[] args ) throws Exception
    {
        new xedni_vanb().doit();        
    }   
}