using System;

public class Program

{

    public static void Main()

    {

        int x;

        Console.WriteLine("Enter the number of test cases required");

        x=Int32.Parse(Console.ReadLine());

        for(int i=0;i<x;i++)

        {

        Console.WriteLine("Enter a string");

        string str = Console.ReadLine();

        Console.WriteLine("Enter the values to extract substring from");

        int n = Int32.Parse(Console.ReadLine());

        Console.WriteLine("to");

        int m = Int32.Parse(Console.ReadLine());

        string str1 = str.Substring(0,n);

        string str2 = str.Substring(str1.Length,m);

        char[] ch = new char[str2.Length];

        ch=str2.ToCharArray();

        Array.Sort(ch);

        Array.Reverse(ch);

        str2 = new string(ch);

        string str3 = str.Substring(str1.Length+str2.Length);

        string strans = str1+str2+str3;

        Console.WriteLine("The output is {0}",strans);

        }

    }

}