using System;

namespace _14._Password_Generator
{
    internal class Program
    {
        static void Main(string[] args)
        {
            int number = int.Parse(Console.ReadLine());
            int simbol = int.Parse(Console.ReadLine());
            int simbolPlace = 97 + simbol;

            for (int firstNumber = 1; firstNumber <= number; firstNumber++)
            {
                for (int secondNumber = 1; secondNumber <= number; secondNumber++)
                {
                    for (int firstSimbol = 97; firstSimbol < simbolPlace; firstSimbol++)
                    {
                        for (int secondSimbol = 97; secondSimbol < simbolPlace; secondSimbol++)
                        {
                            for (int thirdNumber = 1; thirdNumber <= number; thirdNumber++)
                            {
                                if (thirdNumber > firstNumber && thirdNumber > secondNumber)
                                {

                                    Console.Write("{0}{1}{2}{3}{4} ", (firstNumber), (secondNumber), ((char)firstSimbol), ((char)secondSimbol), (thirdNumber));
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}