Developer Challenge - Word Finder in C#

WordFinder.cs

string[] matrix = [
    "a b c d c",
    "i g w i o",
    "c h i l l",
    "p q n s d",
    "u v d x y"
];

string[] wordstream = [
    "cold",
    "wind",
    "snow",
    "chill"
];

var wordFinder = new WordFinder(matrix);
var founds = wordFinder.Find(wordstream);

Console.WriteLine("Finding words...");

foreach (var word in founds)
{
    Console.WriteLine($"- {word}");
}

Console.WriteLine("Done!");

public class WordFinder(IEnumerable<string> matrix)
{
    private string[][] Matrix
    {
        get
        {
            var matrix2 = new string[matrix.Count()][];

            for (int i = 0; i < matrix2.Length; i++)
            {
                matrix2[i] = [.. matrix.ElementAt(i).Split(" ")];
            }

            return matrix2;
        }
    }

    public IEnumerable<string> Find(IEnumerable<string> wordstream)
    {
        return FindWords(wordstream).Distinct();
    }

    private IEnumerable<string> FindWords(IEnumerable<string> wordstream)
    {
        for (int x = 0; x < Matrix.Length; x++)
        {
            var hLetters = new List<string>();
            var vLetters = new List<string>();

            for (int y = 0; y < Matrix[x].Length; y++)
            {
                hLetters.Add(Matrix[x][y]);
                vLetters.Add(Matrix[y][x]);
            }

            var hWord = string.Join(string.Empty, hLetters);
            var vWord = string.Join(string.Empty, vLetters);

            foreach (var word in wordstream)
            {
                if (hWord.Contains(word) || vWord.Contains(word))
                {
                    yield return word;
                }
            }
        }
    }
}