using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(\b.+)(?=\1)";
string input = @"...
bedeubedeu France The Provençal name for tripe
bee balmbee balm Bergamot
beechmastbeechmast Beech nut
beech nutbeech nut A small nut from the beech tree,
genus Fagus and Nothofagus, similar in
flavour to a hazelnut but not commonly used.
A flavoursome oil can be extracted from
them. Also called beechmast
beechwheatbeechwheat Buckwheat
beefbeef The meat of the animal known as a cow
(female) or bull (male) (NOTE: The Anglo-
saxon name ‘Ox’ is still used for some of what
were once the less desirable parts e.g. oxtail,
ox liver)
beef bourguignonnebeef bourguignonne See boeuf à la
bourguignonne
...";
foreach (Match m in Regex.Matches(input, pattern))
{
Console.WriteLine("'{0}' found at index {1}.", m.Value, m.Index);
}
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx