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Cycle: process with continuous cycle, such as a life cycle or water cycle diagram.
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Organization: hierarchical relationships, such as the structure of an organization.
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Pyramid: foundation-based relationships, such as the food guide pyramid.
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Radial: relationships of elements to a core element, such as the relationship of workstations to a network.
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Target: steps toward a goal, such as the steps necessary in training for a marathon.
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Venn: overlapping circles indicating relationships between sets, like similarities or differences between groups of numbers.