using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(^(?:(?:§.*|[^[:alpha:]\n\r]*[[:upper:]]+(?:[^[:alpha:]\n\r]+[[:upper:]]+)*[^[:alpha:]\n\r]*))$|(?i:\bmany of\b))|(?i:\bof\b)";
string substitution = @"$1";
string input = @"§History of TIME
HISTORY OF TIME
of
Future
Past
Of
Many Of
Official
Officer";
RegexOptions options = RegexOptions.Multiline;
Regex regex = new Regex(pattern, options);
string result = regex.Replace(input, substitution);
}
}
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