using System;

​

public class Program

{

    public static void Main()

    {

        string text = "Never a foot too far, even";

        Console.WriteLine(IsPalindrome(text));

    }

    static string AllowedLetters = "abcdefghijklmnopqrstuvwxyz";

    static bool IsPalindrome(string text)

    {

        text = text.ToLower();

        string newText = "";

        foreach (char letter in text)

            if (AllowedLetters.Contains(letter))

                newText += letter;

        int midpoint = newText.Length / 2;

        for (int idx = 0; idx <= midpoint; idx++)

            if (newText[idx] != newText[newText.Length - 1 - idx])

                return false;

        return true;

    }

}