using System;

namespace _07_SafePasswordsGenerator
{
    class Program
    {
        static void Main(string[] args)
        {
            int a = int.Parse(Console.ReadLine());
            int b = int.Parse(Console.ReadLine());
            int maxPasswordsCount = int.Parse(Console.ReadLine());
            int combinationsCounter = 0;
            bool hasReachedTheLimit = false;

            for (char symbolA = (char)35; symbolA < 56; symbolA++)
            {
                for (char symbolB = (char)64; symbolB < 97; symbolB++)
                {
                    for (int numberX = 1; numberX <= a; numberX++)
                    {
                        for (int numberY = 1; numberY <= b; numberY++)
                        {
                            Console.Write($"{(char)symbolA}{(char)symbolB}{numberX}{numberY}{(char)symbolB}{(char)symbolA}|");
                            symbolA++;
                            symbolB++;

                            combinationsCounter++;

                            if (combinationsCounter >= maxPasswordsCount)
                            {
                                hasReachedTheLimit = true;
                                break;
                            }
                            if (numberY == b && numberX == a)
                            {
                                hasReachedTheLimit = true;
                                break;
                            }
                        }

                        if (hasReachedTheLimit)
                        {
                            break;
                        }
                        if (symbolA > 56)
                        {
                            symbolA = (char)35;
                        }
                        if (symbolB > 97)
                        {
                            symbolB = (char)64;
                        }
                    }
                    if (hasReachedTheLimit)
                    {
                        break;
                    }
                }
                if (hasReachedTheLimit)
                {
                    break;
                }
            }

        }
    }
}