In this diagram, step2- the numbers that are calculated come out as follows (shown in the diagram):
8 5 6 9 3 8 7 7 5 0 1 7 9 8
But then when you add them together on the next step (step 3) there are two extra numbers not in that series (9 & 8- 7th and 8th numbers respectively):
8 5 6 9 3 8 9 8 7 7 5 0 1 7 9 8
So, between steps you have 14 numbers which then turn into 16, unexplained. Is there something I am not understanding?