Indexer issue in call for in Main

Question

How I Call this indexer in main class for differ in variable i,x,y 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApplication1
{
using System;
class SampleCollection
{
// Declare an array to store the data elements.
private T[] arr = new T[100];
private P[] prr = new P[100];
private U[] urr = new U[100];
// Define the indexer to allow client code to use [] notation.
public T this[int i]
{
get { return arr[i]; }
set { arr[i] = value; }
}
// Define the indexer to allow client code to use [] notation.
public P this[int x]
{
get { return prr[x]; }
set { prr[x] = value; }
}
// Define the indexer to allow client code to use [] notation.
public U this[int y]
{
get { return urr[y]; }
set { urr[y] = value; }
}
}
class Program
{
static void Main()
{
var stringCollection = new SampleCollection();
for (int i = 0; i < 200;i++ )
{
stringCollection[i] = new {"Hello, World",1,1};
Console.WriteLine(stringCollection[i]);
}
Console.ReadKey();
}
}
// The example displays the following output:
// Hello, World.
}