using System;

namespace Password_Generator
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            int l = int.Parse(Console.ReadLine());
            char Letter = '0';
            char Letter1 = '0';

            for (int i = 1; i < n; i++)
            {
                for (int j = 1; j < n; j++)
                {
                    for (int k = 97; k < l+97; k++)
                    {

                        for (int m = 97; m < l+97; m++)
                        {

                            for (int q = i + 1; q <= n; q++)
                            {
                                Letter = (char)k;
                                Letter1 = (char)m;

                                if(q > i && q > j)
                                Console.Write($"{i}{j}{Letter}{Letter1}{q} ");
                            }
                        }

                    }
                }
            }
        }
    }
}