DLP Dictionary algorithm

Hi ,
We have default dictionaries in DLP like Credit Cards,Illegal Drugs,Medical Information and so on.
I would like to know exact what algorithm/rule/patterns they have put in respective dictionaries.
So that we can verify our requirements with respective dictionary. like in case of Medical information dictionary : How do we know what this dictionary contains.
As per definition available in help.zscaelr.com
“A DLP dictionary contains a set of patented algorithms that are designed to detect specific kinds of information in your users’ traffic.”