MR LAX
Well you see, you've told us there were 4 units in Zone 12 alone, and each of those units had been 18 and 20 members, that's 80 people at best.  So of the balance of 100 people at best, or on your version, there are 20 other SDU members for the rest of Sebokeng.  That can't possibly be true, you must be making a mistake.