public static void Main(string[] args)
{
Set<string> s = new Set<string>();
s.AddWord("123");
s.AddWord("234");
s.AddWord("345");
Set<string> s2 = new Set<string>();
s2.AddWord("321");
s2.AddWord("234");
s2.AddWord("345");
Console.WriteLine(s);
Console.WriteLine();
Console.WriteLine(s2);
Console.WriteLine();
Set<string> s3 = s.Sum(s2);
Console.WriteLine(s3);
Set<string> s4 = s.Sub(s2);
Console.WriteLine(s4);
Set<string> s5 = s.Intersect(s2);
Console.WriteLine(s5);
Console.WriteLine();
}
