using System;
using System.Collections.Generic;

class ExtractPalindromesFromText
{
    static void Main(string[] args)
    {
        string str = "Some text, ABBA alfa test txt bob soso potop php dhl";
        string[] splitByWhitespace = str.Split(new char[]{' ', ',', '"'}, StringSplitOptions.RemoveEmptyEntries);
        List<string> palindromes = new List<string>();
        foreach (var word in splitByWhitespace)
        {
            bool isPalindrom = true;
            for (int i = 0; i < word.Length / 2; i++)
            {
                if (word[i] != word[word.Length - 1 - i])
                {
                    isPalindrom = false;
                    break;
                }
            }
            if (isPalindrom)
            {
                palindromes.Add(word);
            }
        }
        foreach (var words in palindromes)
        {
            Console.WriteLine(words);
        }
    }
}