using System;
using System.Text;

namespace MyCompiler {
    class Program {
        public static void Main(string[] args) {
            Console.WriteLine("Hello world!");
            //--Tried but failed-start-//
            string input = "abcd";
            string result = "";
            Console.WriteLine("Length {0}", input.Length);
            for(int i=0; i< input.Length; i++){
                for(int j=i; j< input.Length ; j++){
                 result = result + "," + input.Substring(i);   
                }
            }
            //--Tried but failed-end-//
             string str = "abcd";
            for (int i = 0; i < str.Length; ++i)  
             {  
                 StringBuilder subString = new StringBuilder(str.Length - i);  
                 for (int j = i; j < str.Length; ++j)  
                 {  
                     subString.Append(str[j]);  
                     Console.Write(subString + " ");  
                 }  
             }  
            Console.WriteLine("Partial Result {0}", result);
        }
    }
}