Sub FindTemplateToPage()
  Dim aRng As Range, str As String, int1 As Integer, int2 As Integer, arrStr() As String
  Set aRng = ActiveDocument.Range
  With aRng.Find
    .ClearFormatting
    .MatchWildcards = True
    .Text = "-[0-9]{1,3}"
    Do While .Execute = True
         int1 = CInt(Replace(aRng.Text, "-", ""))
        If int1 > 7 And int1 < 10 Then
            int1 = int1 - 8
        Else
            int1 = int1 + 2
        End If
      aRng.Text = "-" & int1
      aRng.Collapse Direction:=wdCollapseEnd
      aRng.End = ActiveDocument.Range.End
    Loop
  End With
End Sub

    .Text = "-[0-9]{1,3}"

Do While .Execute = True