Adding Sheets to ListBox in Userform

The code below will add sheets 12 onwards to listbox3. I have 2 other sheets that I would like to add which are veryhiddensheets those being sheets 7 & 8. Can this be done without including sheets 9,10,11 ?

Private Sub UserForm_Initialize()
    Dim i As Integer
    For i = 12 To ThisWorkbook.Worksheets.Count
        Me.ListBox3.AddItem Worksheets(i).Cells(3, 1).Value
    Next i
End Sub