using System.Linq;

using System.Collections;

using System.Collections.Generic;

using System;

​

class User

{

    public string Name { get;set; }

    public int Age { get; set; }

    public List<string> Languages { get; set; }

    public User()

    {

        Languages = new List<string>();

    }

}       

​

public class Program

{

    public static void Main()

    {

        List<User> users = new List<User>

        {

            new User {Name="Том", Age=23, Languages = new List<string> {"английский", "немецкий" }},

            new User {Name="Боб", Age=27, Languages = new List<string> {"английский", "французский" }},

            new User {Name="Джон", Age=29, Languages = new List<string> {"английский", "испанский" }},

            new User {Name="Элис", Age=24, Languages = new List<string> {"испанский", "немецкий" }}

        };

    }

}