4, 8, ____, 16, 20 4, 8, 12, 16, ____ 12, ____, 20, 24, 28 16, 20, 24, ____, 32 ____, 20, 24, 28, 32 20, 24, 28, ____, 36 ____, 28, 32, ____, 40 4, ____, 12, 16, ____, 24, 28, 32, ____, 40

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