How do I format the numbers so that they are subscripts? I get an output of X1Y1 + X2Y2 +…, but ideally I would like it to be X1Y1 + X2Y2 +… so that it is easier to read.

Code:
Public Class Form1

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim n, i, count As Integer
        Dim string2 As String = ""
        Dim string3 As String = ""

        i = 1
        n = 10

        For count = i To n - 1
            string2 &= "X" & count.ToString & "Y" & count.ToString & " + "
        Next

        string3 &= "X" & n.ToString & "Y" & n.ToString

        lbl_ans.Text &= string2 & string3
    End Sub
End Class