using System;

using System.Text;

using System.Text.RegularExpressions;

using System.Linq;

using System.Reflection;

using System.Collections;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        string menu = @"

recipe ABC: Quelle bonne idC)e!

L: 33348, C: 2130

​

1 Like

​

2 Comment

​

3 Next

​

4 See Comments

# Home";

        var lines = menu.Split(new[]{'\n'}, StringSplitOptions.RemoveEmptyEntries);

        // Console.WriteLine(lines.Length);

        var menuRegex = new Regex(@"^\d+\s+\w+");

        foreach(string s in lines)

        {

            if (menuRegex.IsMatch(s))

                Console.WriteLine(s);       

        }

    }

}