using System;
using System.Collections;
using System.Collections.Generic;
using System.Text.RegularExpressions;
public class Test
{
public static void Main()
{
var text = "aaa<p>AI.For example <p>A.I<p>BB.b";
text = Regex.Replace(text, @"(?=<p>\s*([A-Z])\1*\.)", "\uFFFF");
var result = text.Split('\uFFFF');
Console.WriteLine(string.Join("\n", result));
}
}
dXNpbmcgU3lzdGVtOwp1c2luZyBTeXN0ZW0uQ29sbGVjdGlvbnM7CnVzaW5nIFN5c3RlbS5Db2xsZWN0aW9ucy5HZW5lcmljOwp1c2luZyBTeXN0ZW0uVGV4dC5SZWd1bGFyRXhwcmVzc2lvbnM7CiAKcHVibGljIGNsYXNzIFRlc3QKewoJcHVibGljIHN0YXRpYyB2b2lkIE1haW4oKQoJewoJCXZhciB0ZXh0ID0gImFhYTxwPkFJLkZvciBleGFtcGxlIDxwPkEuSTxwPkJCLmIiOwoJCXRleHQgPSBSZWdleC5SZXBsYWNlKHRleHQsIEAiKD89PHA+XHMqKFtBLVpdKVwxKlwuKSIsICJcdUZGRkYiKTsKCQl2YXIgcmVzdWx0ID0gdGV4dC5TcGxpdCgnXHVGRkZGJyk7CgkJQ29uc29sZS5Xcml0ZUxpbmUoc3RyaW5nLkpvaW4oIlxuIiwgcmVzdWx0KSk7Cgl9Cn0=