[
[(1, 3), (5, 7), (9, 11), (13, 15), (17, 19)],
[(21, 23), (25, 27), (29, 31), (33, 35), (37, 39)],
[(41, 43), (45, 47), (49, 51), (53, 55), (57, 59)],
[(61, 63), (65, 67), (69, 71), (73, 75), (77, 79)],
[(81, 83), (85, 87), (89, 91), (93, 95), (97, 99)]
]
