Public Sub Main()
Dim sString As String = "WWWWWWWWWWWWBWWWWWWWWWWWWBBBWWWWWWWWWWWWWWWWWWWWWWWWBWWWWWWWWWWWWWW"
Dim siCount As Short = 1
Dim siStart As Short = 1
Dim sHold As New String[]
Dim sTemp As String

sString &= " "

Repeat
  sTemp = Mid(sString, siCount, 1)
  Do
    Inc siCount
    If Mid(sString, siCount, 1) <> sTemp Then Break
    If siCount = Len(sString) Then Break
  Loop
  sHold.add(Str(siCount - siStart) & sTemp)
  siStart = siCount
Until siCount = Len(sString)

Print sString & gb.NewLine & sHold.Join(", ")

End