正则表达式以任何顺序匹配多个模式

I'm validating a password for complexity in an ASP.NET MVC3 app. My current requirements are that it must contain at least one upper case letter, one lower case letter, one digit and no more than three repeated characters. I'd like to generalise those numbers though, and also add a condition for non-alphanumeric characters.I'm validating a password for complexity in an