Intro:
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--3h-5-7------|--5-7-8---8-8-|--5-7-8-8--------|
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Repeat this 4 times.
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--------------|------7-7-9-9h|10-9-7-10-10-9|-10-10-9-7-(4x)
--5-7-5-7-8-8----------|
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--7-7-9-9h10--|-9h10---------|--7-7-9-9h10--|-9h12---------|
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