Imports System.Text.RegularExpressions
Module Example
Public Sub Main()
Dim pattern1 As String = "\bgr[ae]y\b"
Dim input As String = "The gray wolf blended in among the grey rocks."
For Each match As Match In Regex.Matches(input, pattern1)
Console.WriteLine("'{0}' found at position {1}", _
match.Value, match.Index)
Next
End Sub
End Module
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