Text Variable Use - Looking for Parameters Rather than a Word

I want to evaluate learner's input in the simulation I am building.  I know we can use Text Variables to do that for a single string of characters (case sensitive or not.)  Can I evaluate user input for parameters?  I want users to put in a string of characters with a minimum of 13 total characters, 2 Upper Case, 2 Lower Case, 2 numeric, and 2 special characters.  Where do I start?

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