Figure 3.

Sample spatial exclusion masks (c). The top mask represents the fundamental knowledge implied by the principle of asynchronous access. Because of its maximum value (c = c_[n-1]) = 1, the element c_[n-1] cannot be chosen when selecting a new device outcome c_[n]. The bottom mask represents the assumption that outcomes similar to c_[n-1] should also be excluded from the selection of c_[n].