List of possible combinations

I am trying to write some vb.net code that will list all possible combnations of a lst of words.

Currently, I'm interested in the non repeating combination of 4 words "brand", "kind", "size" and "weight".  order is not important.

for example,

I would like to see

brand
brand,kind
brand,kind,size
brand,kind,size,weight

etc

by non repeating I mean for example that
if brand,kind is listed i do not want to see kind,brand

Any ideas???

johnnyg123Asked:
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rettiseertCommented:
Hi, try this:

Module Module1

    Sub Main()

        Dim R As String

        For I As Integer = 1 To 15

            R = String.Empty

            R &= IIf(I And 1, "weight,", "")
            R &= IIf(I And 1 << 1, "size,", "")
            R &= IIf(I And 1 << 2, "kind,", "")
            R &= IIf(I And 1 << 3, "brand,", "")

            If R.EndsWith(",") Then
                R = R.Substring(0, R.Length - 1)
            End If

            Console.WriteLine(R)
        Next

        Console.ReadKey()

    End Sub

End Module
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Kyle AbrahamsSenior .Net DeveloperCommented:
None repeating is easy:

Load them into an array.

Loop through the array, appending the next word in.

Ex:

            Dim x As String() = "r,t".Split(",")

            Dim s As String
            s = ""
            For i As Integer = 0 To x.Length
                s = s + x(i)
                'output S
            Next
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