úÎx      None)!"%&*,/0234569:;<=?BDFILNOQRT[\ O(1).O(1), occasionally O(n).O(1), occasionally O(n).O(1).O(1).O(1), occasionally O(n).O(1), occasionally O(n). O(n). O(1). O(1), occasionally O(n). O(1), occasionally O(n).            deque-0.1-2ai98SuuIK0DYUGXhKawHNDequefromList shiftRight shiftLeftconssnocunconsunsnocprependreversetailinit$fFoldableDeque $fMonoidDeque$fFunctorDeque