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An outline of the process inferred to occur when A, B, P1, P2, and CoII are mixed in the proportions shown. (a) Tetrahedron 1 forms first, sequestering all A. (b) Cuboctahedron 4 may then form, consuming all P2, followed by (c) cube 3, or else (d) cube 3 may form first, consuming all P1, followed by cuboctahedron 4. Both paths lead to an identical final state in which only 1, 3, and 4 are observed.
