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

namespace Wedding_nested_more_
{
    class Program
    {
        static void Main(string[] args)
        {
            int mens = int.Parse(Console.ReadLine());
            int women = int.Parse(Console.ReadLine());
            int totalTables = int.Parse(Console.ReadLine());
            int couter = 1;

            do
            {
                for (int i = 1; i <= mens; i++)
                {
                    couter++;
                    for (int j = 1; j <= women; j++)
                    {
                        Console.Write($"({i} <-> {j}) ");
                couter++;
                    }
                }


            } while (totalTables >= couter);
        }
    }
}