hint 2: if i communicate the suit to joel with one of the cards, then i'm only left with the other 3 cards to show the number. since only the ordering of the cards can be used, i am allowed up to six combinations. well, that won't do to signify up to 13 cards, will it? certainly not, but if i pick the right card to show the suit, i can use that card to reduce the range of cards down to 6. how?

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