class Program
    {
        static void Main(string[] args)
        {
            string s, s1, s2, c1, c2;
            char c;
            s = Console.ReadLine();
            s1 = Console.ReadLine();
            s2 = Console.ReadLine();
            c1 = Console.ReadLine();
            c2 = Console.ReadLine();
            c = '3';
            Console.WriteLine("concatenare   " + (s1 + s2));//concateneaza doua siruri;
            Console.WriteLine("Compararea   " + (s.Equals(s1)));//ret F daca s nu e identic cu s1;
            Console.WriteLine("Incepe  " + (s.StartsWith(s1)));//ret A daca s incepe cu s1;
            Console.WriteLine("Termina  " + (s.EndsWith(s2))); // ret A daca s se termina cu s2;
            Console.WriteLine("Le compare el cumva: 0 daca sunt egale " + (s.CompareTo(s1)));
            Console.WriteLine(s.IndexOf('d')); //e de la 0 la ...
            Console.WriteLine(s.LastIndexOf('b'));
            Console.WriteLine(s.Substring(3, 2));
            Console.WriteLine(s.Substring(3));

            Console.WriteLine(s.Replace(c1, c2));
            Console.WriteLine(s.Remove(2, 3));
            Console.WriteLine(s.ToUpper());
            Console.WriteLine(s1.ToLower());

            Console.ReadKey();
        }