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0 - Four-corner fragments
0.0 - lines
0.1 - curves
0.2 - mixed
1 - Four-corner unit growth
1.0 - lines
1.1 - curves
1.2 - mixed
1.3 - mixed w/ color
2 - Color variations on four-corner unit growth
2.0 - lines
2.1 - curves
3 - Four-direction bursts
3.0 - lines
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