13. Are the rest of the parallel diagonals all formed the same way?
Yes! Absolutely. Congratulations! You can now make the BBS-ISL Matrix from simple to infinity (∞)!
14. Hold on a minute! What about the other half?
Remember, it is a symmetrical mirror of the lower half. The rows and columns just point 90° the other way. To keep things simple, we often work with just the lower half. The same numbers fill in the cells of the upper halve.
15. Does the PD play any other roles in the matrix?
Yes, absolutely. For one, every grid cell value is simply the ∆ between the PD values at the row and column intercepts.
Is that not simple, or what! You now have two methods to create the BBS-ISL Matrix without batting an eye! Easy! Simple!
Example: cell with 27 = PD 36 - PD 9.