static void Main(string[] args)
{
Person person = new Person();
person.ChangeFirstName(1999, "Helen");
person.ChangeLastName(2001, "Kot");
person.ChangeFirstName(2004, "Ruby");
person.ChangeLastName(2005, "Krets");
for (int i = 1996; i < 2006; i++)
{
person.GetFullName(i);
}
}