using System;
using System.Text.RegularExpressions;

namespace MyCompiler {
    class Program {
        public static void Main(string[] args) 
        {
            Console.WriteLine("Hello world!");
            NumberOfRepeats("abcabcabcabc" );
            NumberOfRepeats("bcbcbc");
            NumberOfRepeats("llbllbllbllbllbllb");
            NumberOfRepeats("kc");
            NumberOfRepeats("abcdefghijklmenopqrstuvwxyzabcdefghijklmenopqrstuvwxyzabcdefghijklmenopqrstuvwxyzabcdefghijklmenopqrstuvwxyzabcdefghijklmenopqrstuvwxyzabcdefghijklmenopqrstuvwxyzabcdefghijklmenopqrstuvwxyzabcdefghijklmenopqrstuvwxyzabcdefghijklmenopqrstuvwxyzabcdefghijklmenopqrstuvwxyzabcdefghijklmenopqrstuvwxyzabcdefghijklmenopqrstuvwxyzabcdefghijklmenopqrstuvwxyzabcdefghijklmenopqrstuvwxyzabcdefghijklmenopqrstuvwxyzabcdefghijklmenopqrstuvwxyzabcdefghijklmenopqrstuvwxyzabcdefghijklmenopqrstuvwxyzabcdefghijklmenopqrstuvwxyzabcdefghijklmenopqrstuvwxyzabcdefghijklmenopqrstuvwxyz");
        }
        
        public static void NumberOfRepeats(string str)
        {
            int res = Regex.Matches(str,str.Substring(0,2)).Count;
            Console.WriteLine(res);
        }
    }
}