Sort 3 Numbers with Nested Ifs

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

namespace novo2
{
    class Program
    {

        static void Main(string[] args)
        {
            double firstNumber = double.Parse(Console.ReadLine());
            double secondNumber = double.Parse(Console.ReadLine());
            double thirdNumber = double.Parse(Console.ReadLine());
            string razst = " ";
            if (firstNumber > secondNumber && firstNumber > thirdNumber)
            {
                Console.Write(firstNumber + razst);
                if (secondNumber > thirdNumber)
                {
                    Console.Write(secondNumber + razst);
                    Console.Write(thirdNumber + razst);
                }
                else
                {
                    Console.Write(thirdNumber + razst);
                    Console.Write(secondNumber + razst);
                }
            }
            if (secondNumber > firstNumber && secondNumber > thirdNumber)
            {
                Console.Write(secondNumber + razst);
                if (firstNumber > thirdNumber)
                {
                    Console.Write(firstNumber + razst);
                    Console.WriteLine(thirdNumber + razst);
                }
                else
                {
                    Console.Write(thirdNumber + razst);
                    Console.Write(firstNumber + razst);
                }
            }
            if (thirdNumber > firstNumber && thirdNumber > secondNumber)
            {


                {
                    Console.Write(thirdNumber + razst);
                    if (secondNumber > firstNumber)
                    {
                        Console.Write(secondNumber + razst);
                        Console.Write(firstNumber + razst);
                    }
                    else
                    {
                        Console.Write(firstNumber + razst);
                        Console.Write(secondNumber + razst);
                    }
                }
            }
            }
        }
    }