Instead of 3 cells collections -3 columns

[Excelnewbie001]

Wonder if someone can help me. I have the following code where collections are made on 3 cells H2 I2 J2 -if I want the collections to be on 3 columns instead of 3 cells what code must change.The collections get checked on column A1-15 and B1-15 respectively.So the collections must be on 3 columns values instead of 3 cells column H and I and I.Can this be done ? Any help appreciated -sorry the range will be 3 columns thats done but it should still do the collection -think I got my terminology mixed up there. So the range must be 3 columns instead of 3 cells.Thanks for any help

Sub Test()
Sheets("Sheet1").Activate
  Dim a(), c As New Collection, d As New Collection, i As Long, j As Long, strKey As String, x As String, y As String, z As String, v1, v2, v3
  Sheets("Sheet1").Select
  a = Range("A1").CurrentRegion.Value
  x = Range("H2").Value                       ' >>>>>> 3 cells H2 I2 J2
  y = Range("I2").Value
  z = Range("J2").Value
  For i = 2 To UBound(a, 1)
      strKey = CStr(a(i, 2))
      On Error Resume Next
         c.Add Key:=strKey, Item:=New Collection
      On Error GoTo 0
      c(strKey).Add a(i, 1)
  Next i
  On Error Resume Next
     Set v1 = c(x)
     Set v1 = c(y)
     Set v1 = c(z)
     If Err.Number <> 0 Then Exit Sub
  On Error GoTo 0
  For Each v1 In c(x)
      For Each v2 In c(y)
          For Each v3 In c(z)
              d.Add Array(v1, v2, v3)
          Next v3
      Next v2
  Next v1
  ReDim a(1 To d.Count, 1 To 3)
  i = 0
  For Each v1 In d
      i = i + 1
      a(i, 1) = v1(0)
      a(i, 2) = v1(1)
      a(i, 3) = v1(2)
  Next v1
  Range("N18").Resize(UBound(a, 1), UBound(a, 2)).Value = a
End Sub

 

[Excelnewbie001]

The photo below the code macro worked out 3 ranges -in the code H2 I2 J2......although my sample was set F2 H2 G2. So my question is basically what must be changed so that the code will do the 3 columns......either F2 H2 G2 or the code as per macro I2 H2 J2 so that the whole column F H G or column H I J will be used.Hope this is a clearer