using System;

using System.Collections.Generic;

public class Test
{
	public static void Main()
	{
             var conditions = new List<string>();
             conditions.Add("Lastname = 'Lennon'");
             conditions.Add("Firstname = 'John'");
             conditions.Add("Age = 40");

             Console.WriteLine(string.Join(" OR ", conditions.ToArray() ));
	}
}