10 11 12, 14 15 16, 15 16 17, 11 12 13, 13 14 15, 16 17 18, 18 19 20, 10 11 12 13, 11 12 13 14, 12 13 14 15, 13 14 15 16, 16 17 18 19, 17 18 19 20, 10 11 12 13 14, 11 12 13 14 15, 12 13 14 15 16, 13 14 15 16 17, 14 15 16 17 18, 15 16 17 18 19, 16 17 18 19 20

Numbers sequence: teens

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