Find the number of ways that the numbers 1, 2, 12 can be arranged in a sequence (a₁, a2,..., a12) such that a1 > a2 > Az > A4 > A5 > Aç and a6 < a < a8 < A9 < A10 < a11 < a12. An example of such a permutation is (6, 5, 4, 3, 2, 1, 7, 8, 9, 10, 11, 12).

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