Passed test 1
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(1, 2, 3)
Passed test 2
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Test 3
(3, 4, 5)(1, 2, 3)(2, 3, 4)
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Test 4
(7, 8, 9)(4, 5, 6)(6, 7, 8)(1, 2, 3)(3, 4, 5)(2, 3, 4)(5, 6, 7)
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Test 5
Passed 7 of 7 dequeue operations