using System;

using System.Collections.Generic;

public static class Program

{

    public static void Main()

    {

           // Input.

        const string test = "০০১.  নাম: জাহাঙীর আলী ০০২.  নাম: আফরাজুল ইসলাম ০০৩.  নাম: িরয়াজুল ইসলাম  ০০১.  নাম: জাহাঙীর আলী ০০২.  নাম: আফরাজুল ইসলাম ০০৩.  নাম: িরয়াজুল ইসলাম";

        List<int> i=test.AllIndexesOf("নাম:");

        int prvInd=0;

        foreach(int m in i)

        {

            if(prvInd>0)

            {

        //string n=test.Substring(m,5);

        //Console.WriteLine("Name {0}",n); 

        //Console.WriteLine("Current Index: {0}",m); 

        //Console.WriteLine("prv start Index: {0}",prvInd);

        //Console.WriteLine("test.Length: {0}",test.Length);

        //Console.WriteLine("test.Length-prvInd: {0}",(test.Length-prvInd));

        //Console.WriteLine("test.Length-(test.Length-prvInd): {0}",test.Length-(test.Length-prvInd));

                int k=test.Length-(test.Length-m+prvInd+6);

        //Console.WriteLine("lll: {0}", k); 

                Console.WriteLine(test.Substring(prvInd,k));

​

            //string na=test.Substring(m+5,Math.Min(test.Length,m+5)-prvInd-10);

        //.WriteLine("Name {0}",na); 

                //Console.WriteLine(test.Substring(m+5,test.Length-(test.Length-(prvInd+9))));

        Console.WriteLine("\n");

            }

            prvInd=m+5;

        //Console.WriteLine("Name {0}",n); 

        //Console.WriteLine("Index {0}",m);

        }

​

        // Test Between.

        //Console.WriteLine(test.Between("নাম:", " োভাটার নং:"));

        //Console.WriteLine(test.Between(":", "="));

        //Console.WriteLine("Hello World");

    }

    public static List<int> AllIndexesOf(this string str, string value) {

    if (String.IsNullOrEmpty(value))

        throw new ArgumentException("the string to find may not be empty", "value");

    List<int> indexes = new List<int>();

    for (int index = 0;; index += value.Length) {

        index = str.IndexOf(value, index);

        if (index == -1)

            return indexes;

        indexes.Add(index);

    }

}

      public static string Between(this string value, string a, string b)

    {

        int posA = value.IndexOf(a);

        int posB = value.LastIndexOf(b);

        if (posA == -1)

        {

            return "";

        }

        if (posB == -1)

        {

            return "";

        }

        int adjustedPosA = posA + a.Length;

        if (adjustedPosA >= posB)

        {

            return "";

        }

        return value.Substring(adjustedPosA, posB - adjustedPosA);

    }

}