2, 4, 6, ____, ____, ____..., 60, 55, 50, ____, ____, ____..., 33, 36, 39, ____, ____, ____..., 77, 88, 99, ____, ____, ____..., 1, 5, 9, 1, 5, 9, ____, ____, ____..., 50, 58, 66, ____, ____, ____....

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