Sub ReplaceWithCheckBoxes()
    Selection.Find.ClearFormatting
    With Selection.Find
        .Text = ChrW(61551)
        .Replacement.Text = ChrW(9744)
        .Forward = True
        .Wrap = wdFindContinue
        .Format = False
        .MatchCase = False
        .MatchWholeWord = False
        .MatchWildcards = False
        .MatchSoundsLike = False
        .MatchAllWordForms = False
    Do While Selection.Find.Execute
    Selection.Range.ContentControls.Add (wdContentControlCheckBox)
    Loop
    End With
End Sub