deque([0])
deque([1, 2, 3, 4, 5, 6, 7, 8, 9])
deque([2, 3, 4, 5, 6, 7, 8, 9])
deque([3, 4, 5, 6, 7, 8, 9])
deque([4, 5, 6, 7, 8, 9])
deque([5, 6, 7, 8, 9])
deque([6, 7, 8, 9])
deque([7, 8, 9])
deque([8, 9])
deque([9])
1