Here is one way:
Code:
Sub ScratchMacro()
'A basic Word macro coded by Greg Maxey
Dim oRng As Word.Range
Dim lngIndex As Long
Set oRng = ActiveDocument.Range
For lngIndex = 2 To 150
With oRng.Find
.Text = lngIndex & ". "
.Font.Bold = True
While .Execute
oRng.MoveStart wdCharacter, -1
oRng.Characters(1) = vbCr
oRng.Collapse wdCollapseEnd
Wend
End With
Next lngIndex
Set oRng = ActiveDocument.Range
With oRng.Find
.Text = " [abcd]."
.MatchWildcards = True
While .Execute
oRng.Characters(1) = vbCr
oRng.Collapse wdCollapseEnd
Wend
End With
End Sub