Figure 1

(A) Several generations of a typical case: Matrix 20 × 20, p = 60%. Generations presented: (a)-1, (b)-2, (c)-8 and (d)-9. Cells of type 1 are in red; those of type 2 in green; and those of type 3 in blue. (B) Exemplary active-cells through-path (in red) near percolation. Matrix 20 × 20, p = 60%. Other active cells during process are in yellow.