[
[(2, 4), (6, 8), (10, 12), (14, 16), (18, 20)],
[(22, 24), (26, 28), (30, 32), (34, 36), (38, 40)],
[(42, 44), (46, 48), (50, 52), (54, 56), (58, 60)],
[(62, 64), (66, 68), (70, 72), (74, 76), (78, 80)],
[(82, 84), (86, 88), (90, 92), (94, 96), (98, 100)]
]
