Palindrome Index

sing System;

namespace _10.PalindromeIndex
{
    using System.Linq;

    public class PalindromeIndex
    {
        public static void Main()
        {
            string word = Console.ReadLine().ToLower();
            string reversed = new string(word.Reverse().ToArray());

            if (word == reversed)
            {
                Console.WriteLine("-1");
            }
            else
            {
                foreach (var letter in word)
                {
                    string tempWord = word.Remove(word.IndexOf(letter), 1);
                    reversed = new string(tempWord.Reverse().ToArray());
                    if (tempWord == reversed)
                    {
                        Console.WriteLine(word.IndexOf(letter));
                        break;
                    }
                }
            }
        }
    }
}