
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
There are two decks of playing cards, and the order of each deck is as follows: the first card is the Big Joker, the second card is the Small Joker, followed by the suits of Spades, Hearts, Diamonds, and Clubs, with each suit's cards arranged in the order of A, 1, 2, 3, ... J, Q, K. Someone stacks the two decks of cards on top of each other in the order mentioned above, then starts from the top, discards the first card, moves the second card to the bottom, discards the third card, moves the fourth card to the bottom, and so on, until only one card remains. What is the remaining card?

Present the answer in LaTex format: \boxed{Your answer}
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