For this puzzle you need to figure out the next entry in this sequence. You'll write your answer using two characters for each card; one for the value and one for the suit. For reference, the last entry before the question mark would be written 3CAD2H2SACAD.
A couple of hints... you'll use A to write your answer. While you're trying to figure out the sequence, however, you're better off thinking of them as the number 1. There are also two separate sequences in play that are combined together to make each set of cards above. If you're getting stuck, trying talking it out with a friend.
As always, your answer can be used as a 15% discount code for your room reservation. Good luck!