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Stylus: A System for Evolutionary Experimentation Based on a Protein/Proteome Model with Non-Arbitrary Functional Constraints

Figure 2

Hierarchical structure of Han characters.

Single strokes, like that shown at the bottom, are combined to form successively more complex structures (shown as ascending layers). Characters range in complexity from a single stroke to dozens of strokes.

Figure 2

doi: https://doi.org/10.1371/journal.pone.0002246.g002