using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _09.Password_Generator
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            int l = int.Parse(Console.ReadLine());
            int letter = 97 + l;

            for (int i = 1; i < n; i++)
            {
                for (int j = 1; j < n; j++)
                {
                    for (int m = 97; m < letter; m++)
                    {
                        for (int o = 97; o < letter; o++)
                        {
                            for (int p = 2; p <= n; p++)
                            {
                                if (p > i && p > j)
                                {
                                    Console.Write("{0}{1}{2}{3}{4} ", i, j, (char)m, (char)o, p);
                                }

                            }
                        }
                    }
                }
            }
        }
    }
}