using System;

public class Program

{

    public static void Main()

    {

    }

​

    public static int[] toBase(long bs, long value)

    {

        int[] result = new int[bs];

        for (long i = bs - 1; i >= 0; i--)

        {

            result[i] = (int)(value % bs);

            value = value / bs;

        }

        return result;

    }

    public static long Pow(long a, long b)

    {

        long result = 1;

        for (int i = 0; i < b; i++) result *= a;

        return result;

    }

    public static char[] pool = new char[] { 'a', 'b', 'c', '3', '5', '6' };

    public static void outputAll()

    {

        long n = pool.Length;

        for (long i = 0; i < Pow(n, n); i++)

        {

            int[] indices = toBase(n, i);

            for (int j = 0; j < n; j++)

                Console.Write("{0} ", pool[indices[j]]);

            Console.WriteLine();

        }

    }

}