Bit Swapper (100/100)

using System;
using System.Collections.Generic;

namespace BitSwapper
{
    class BitSwapper
    {
        static void Main()
        {
            uint first = uint.Parse(Console.ReadLine());
            uint second = uint.Parse(Console.ReadLine());
            uint third = uint.Parse(Console.ReadLine());
            uint fourth = uint.Parse(Console.ReadLine());
            string[] binaries = new string[4];
            binaries[0] = Convert.ToString(first, 2).PadLeft(32, '0');
            binaries[1] = Convert.ToString(second, 2).PadLeft(32, '0');
            binaries[2] = Convert.ToString(third, 2).PadLeft(32, '0');
            binaries[3] = Convert.ToString(fourth, 2).PadLeft(32, '0');
            List<List<string>> numsChunks = new List<List<string>>();
            for (int i = 0; i < 4; i++)
            {
                List<string> tempNum = new List<string>();
                for (int j = 0, k=0; j < 8; j++,k+=4)
                {
                    string temp = binaries[i][k].ToString() +
            binaries[i][k + 1].ToString() + binaries[i][k + 2].ToString() +
            binaries[i][k + 3].ToString();
                    tempNum.Add(temp);
                }
                numsChunks.Add(tempNum);
            }

            while (true)
            {
                string firstPart = Console.ReadLine();
                if (firstPart=="End")
                {
                    break;
                }
                string secondPart = Console.ReadLine();
                int firstIndex = Convert.ToInt32(firstPart[0].ToString());
                int secondIndex = Convert.ToInt32(secondPart[0].ToString());
                int firstChunk = Convert.ToInt32(firstPart[2].ToString());
                int secondChunk = Convert.ToInt32(secondPart[2].ToString());
                string firstExtract = numsChunks[firstIndex][7 - firstChunk];
                string secondExtract = numsChunks[secondIndex][7 - secondChunk];
                numsChunks[firstIndex][7 - firstChunk] = secondExtract;
                numsChunks[secondIndex][7 - secondChunk] = firstExtract;
            }

            foreach (var vari in numsChunks)
            {
                string[] nums=new string[8];
                int i = 0;
                foreach (var str in vari)
                {
                    nums[i] = str;
                    i++;
                }
                string final = string.Join("", nums);
                Console.WriteLine(Convert.ToUInt32(final,2));
            }
        }
    }
}