I'll see if I can edit it... I'm not sure why you get Bethany when typing Elizabeth as to me the names are very separate, but Betty is definitely short for Elizabeth.
Whilst back in the day Molly may have been a pet name for Mary/Margaret, both of those names are quite uncommon for children born more recently, so I think Molly is definitely a name in it's own right now, same with Jack.
I'm making my own with danish names, and i can only get 10, and they are not even on top of each other
You are very welcome to check out the final result: http://www.jetpunk.com/user-quizzes/174155/danish-baby-girl-names-by-decade :)