using System;

using System.Collections.Generic;

using org.mariuszgromada.math.mxparser;

​

public class Program

{

    public static void Main()

    {

        string pattern = "1.A,b  a,1";

        Console.WriteLine(IsPalindrome(pattern));       

    }

    private static bool IsPalindrome(string value){

        value = value.ToLower();

        int i = 0, j = value.Length - 1;

        while(i < j) {

            while(i < j && (value[i] == ' ' || value[i] == '.' || value[i] == ',')) i++;

            while(i < j && (value[j] == ' ' || value[j] == '.' || value[j] == ',')) j--;

            if(value[i++] != value[j--]) return false;

        }

        return true;

    }

}