using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
public class MainClass {
public static void Main() {
string[] words = { "bei", "rie", "rei", "field" };
bool iAfterE = words.Any(w => w.Contains("ei"));
Console.WriteLine("There is a word that contains in the list that contains 'ei': {0}", iAfterE);
}
}