Cards in Python can be represented as a string consisting of a value and a suit, using initials {D, H,C, S} (denoting Diamonds, Hearts, Spade, and Club). For example, 4S corresponds to 4-of-spades (shows 4 on the card), and AD corresponds to Ace-of-Diamonds (Aq on the card). Generate (automatically) a Python list cards=[2S,2H,...] of all possible cards.