route([[1, 1], [9, 8], [[[2, 3], [4, 5]], [[6, 6], [8, 8]]]], [[9, 8], [9, 7], [9, 6], [9, 5], [8, 5], [7, 5], [6, 5], [5, 5], [5, 4], [5, 3], [5, 2], [4, 2], [3, 2], [2, 2], [1, 2], [1, 1]]).