public static void Main()
string alphabet = "aZbYcXdWeVfUgThSiRjQkPlOmNnMoLpKqJrIsHtGuFvEwDxCyBzA";
string ciphertext = "Prdb ejitg jcuIFFWFHVWlgYJILXELWWLYXsjuqsxHPMADYIHWHYIHYSANNSGREIPElgixczcyxcVRDVEUOHPSFypaSGXRGXIGIXQMATQHGFmzpgvno exmmxkXNh";
string[] arr = ciphertext.Split(' ');
for(int d = 1; d < 52; d++)
for(int i = 0; i < arr[0].Length;i++)
newtext+= alphabet[(alphabet.IndexOf(arr[0][i])+d)%26];
Console.WriteLine(newtext);