using System;

public class Program

{

    public static void Main()

    {

        int angka = Convert.ToInt16(Console.ReadLine());

        string input = Console.ReadLine();

        char[] inputarr = input.ToCharArray();

        int length = inputarr.Length;

        int lastindex=angka-1;

        int start = 0;

        while (lastindex != length){

            Console.WriteLine(input.Substring(start,angka));

            lastindex++;

            start++;

        }

    }

}