1, ____, 3 ____, 5, 6 7, ____, 9 ____, 2, 3 4, ____, 6 7, 8, ____ 2, ____, 6, 8, ____ ____, 6, 9, ____,____ 1, 3, ____, ____, ____ ____, 3, 5 7, 9, ____ 13, ____, 17 2, 4, ____ 8, ____, 12 ____, 16, 18 ____, 15, ____, 20, ____ ____, 17, ____, 22, ____ 13, ____, 21, ____, 27, ____

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