[[1, 2], [3, 4]]
[[1, 2], [3, 4]]
[[1, 2], [3, 4]]
[[-1, -2], [3, 4, -5]]
[[-1, -2], [3, 4, -5]]
[[-1, -2], [3, 4, -5]]
[[1, 2, 3, 4]]
[[1, 2, 3, 4]]
[[1, 2, 3, 4]]
[[4], [8], [15], [16], [23, 42]]
[[4], [8], [15], [16], [23, 42]]
[[4], [8], [15], [16], [23, 42]]
[[], [], [], [], [], [], [4, 8, 15, 16, 23, 42]]
[[], [], [], [], [], [], [4, 8, 15, 16, 23, 42]]
[[], [], [], [], [], [], [4, 8, 15, 16, 23, 42]]
[[2, 3, 5], [7, 11, 13], [17, 19, 23]]
[[2, 3, 5], [7, 11, 13], [17, 19, 23]]
[[2, 3, 5], [7, 11, 13], [17, 19, 23]]
[[], [], []]
[[], [], []]
[[], [], []]