>>> runGenerations([1, 2, 3, 4, 5, 42]) [1, 2, 3, 4, 5, 42] [2, 3, 4, 5, 42, 1] [3, 4, 5, 42, 1, 2] [4, 5, 42, 1, 2, 3] [5, 42, 1, 2, 3, 4] [42, 1, 2, 3, 4, 5] [1, 2, 3, 4, 5, 42] [2, 3, 4, 5, 42, 1]