DifferentNumbers

using System;

namespace DifferentNumbers
{
    class DifferentNumbers
    {
        static void Main(string[] args)
        {
            int firstNumber = int.Parse(Console.ReadLine());
            int secondNumber = int.Parse(Console.ReadLine());
            int counter = 0;
            if ((secondNumber - firstNumber) < 5)
            {
                Console.WriteLine("No");
            }
            for (int i = firstNumber; i <= secondNumber; i++)
            {
                for (int j = i; j <= secondNumber; j++)
                {
                    for (int k = j; k <= secondNumber; k++)
                    {
                        for (int l = k; l <= secondNumber; l++)
                        {
                            for (int m = l; m <= secondNumber; m++)
                            {
                                if (firstNumber <= i && i < j && j < k && k < l && l < m && m <= secondNumber)
                                {
                                    Console.WriteLine($"{i} {j} {k} {l} {m}");
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}