Sub Demo()
Application.ScreenUpdating = False
With ActiveDocument.Range
  With .Find
    .ClearFormatting
    .Replacement.ClearFormatting
    .Format = False
    .Forward = True
    .Wrap = wdFindContinue
    .MatchWildcards = True
    .Text = "([0-9]@\)*^13)(*)(Answer:*^13)"
    .Replacement.Text = "\1\3\2"
    .Execute Replace:=wdReplaceAll
    .Text = "^13^13"
    .Replacement.Text = "^px^&"
    .Execute Replace:=wdReplaceAll
    .Text = "([0-9]@\)*Answer:*)([A-Z])*(\2\)*^13)*^13{2}"
    .Replacement.Text = "\1\3^p"
    .Execute Replace:=wdReplaceAll
  End With
End With
Application.ScreenUpdating = True
End Sub