Sub ListAllCombinations()
'Updateby Extendoffice
Dim xDRg1, xDRg2, xDRg3 As Range
Dim xRg  As Range
Dim xStr As String
Dim xFN1, xFN2, xFN3 As Integer
Dim xSV1, xSV2, xSV3 As String
Set xDRg1 = Range("A1:A7")  'First column data
Set xDRg2 = Range("B1:B3")  'Second column data
Set xDRg3 = Range("C1:C4")  'Third column data
xStr = "-"   'Separator
Set xRg = Range("I1")  'Output cell
Set xRg2 = Range("J1")  'Output cell
Set xRg3 = Range("K1")  'Output cell
For xFN1 = 1 To xDRg1.Count
    xSV1 = xDRg1.Item(xFN1).Text
    For xFN2 = 1 To xDRg2.Count
        xSV2 = xDRg2.Item(xFN2).Text
      For xFN3 = 1 To xDRg3.Count
        xSV3 = xDRg3.Item(xFN3).Text
        xRg.Value = xSV1 & xStr & xSV2 & xStr & xSV3
        xRg2.Value = xSV1 & xStr & xSV2 & xStr & xSV3
        xRg3.Value = xSV1 & xStr & xSV2 & xStr & xSV3
        Set xRg = xRg.Offset(1, 0)
        Set xRg2 = xRg2.Offset(1, 0)
        Set xRg3 = xRg3.Offset(1, 0)
       Next
    Next
Next

Set Range1 = Range("I1:I84")
For xFN1 = 1 To Range1.Count
    Range1.Item(xFN1).Value = Split(Range1.Item(xFN1).Text, "-")(0)
Next

Set Range2 = Range("J1:J84")
For xFN1 = 1 To Range2.Count
    Range2.Item(xFN1).Value = Split(Range2.Item(xFN1).Text, "-")(1)
Next

Set Range3 = Range("K1:K84")
For xFN1 = 1 To Range3.Count
    Range3.Item(xFN1).Value = Split(Range3.Item(xFN1).Text, "-")(2)
Next

End Sub