Try this
Code:
Sub Replace2returnsWith1()
Selection.WholeStory
With Selection.Find
.ClearFormatting
.Replacement.ClearFormatting
.Text = "^13{2,}"
.Replacement.Text = "^p"
.Forward = True
.Wrap = wdFindContinue
.format = False
.MatchCase = False
.MatchWholeWord = False
.MatchAllWordForms = False
.MatchSoundsLike = False
.MatchWildcards = True
.Execute Replace:=wdReplaceAll
End With
End Sub