Consider two lists A and B, of equal size 3. A[1] corresponds to B[1], A[2] to B[2], etc, for instance A are image scans from 2007 and B from 2008, and the index indicates the patient number. A = [a0, a1, a2] B = [b0, b1, b2] There's then two lists of possible parameters P and Q, of different lengths, P has 2 and Q has 4 items. P = [p0, p1] Q = [q0, q1, q2, q3] Each of the A items should be processed in ap using each of the P parameters, and each of the B items ...