14. Magic Letter

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

namespace _14_Magic_Letter
{
    class Program
    {
        static void Main(string[] args)
        {
            char first = char.Parse(Console.ReadLine());
            char second = char.Parse(Console.ReadLine());
            char third = char.Parse(Console.ReadLine());
            char min = GetMin(first, second);
            char max = GetMax(first, second);
            StringBuilder Everything = new StringBuilder();
            for (char i = min; i <= max; i++)
            {
                for (char j = min; j <= max; j++)
                {
                    for (char k = min; k <= max; k++)
                    {
                        if (i != third && j != third && k != third)
                        {
                            string iString = new string(i, 1);
                            string jString = new string(j, 1);
                            string kString = new string(k, 1);

                            Everything.Append(iString + jString + kString + " ");
                        }
                    }
                }
            }
            string final = Everything.ToString();
            Console.WriteLine(final);
        }

        private static char GetMax(char first, char second)
        {
            char max = first;
            if (first < second)
            {
                max = second;
            }

            return max;
        }

        private static char GetMin(char first, char second)
        {
            char min = first;
            if (first > second)
            {
                min = second;
            }

            return min;
        }
    }
}