The question is whether we want how many ordered lists or how many
   unordered sets maybe?
   Combinations got involved for picking which decisions will be used.
   Now we want to know which items the decisions pick.  The decisions are
   already made in the same order.
   Since they are all made in the same order, picking things in a
   different order is diffetent.  I think we want permutations here,
   because each ordering is a diffetent set of events.
   So it's an exponent, times some combinations, times some smaller
   permutations.