Here's a sample page from John's system:
Take note of the numbers appearing three times or more.
* In 3 results in one group, normally no numbers appear three times or more. Also, there aren’t many numbers appearing two times.
* As from 3 results in one group up to 10 results in one group, the numbers appearing three times or more increase gradually.
* In 10 results in one group, there are substantial numbers appearing three times or more but normally there are no more than ten.
Also, take note of numbers appearing four times or more. Not many of them but most of the time appear in the 10 results in one group since most numbers are grouped there.
Slash through the numbers that appear in the new results. Look for the numbers coming out in the new results by slashing them out. Then start minus with total of 7 from the bottom level to the top according to the slashes. One slash means minus by one and two slashes mean minus by two so on and so forth.
This round, four numbers at the levels of one, two and four results are slashed. This produces a set of middle-range numbers (3, 4, 4, 6, 7). Added to the previous total (23, 22, 18, 13, 7) this produces a new total (25, 22, 17, 13, 7) in which the figures look close to the previous ones. If only two numbers were slashed here, the figures in new total would not be that close.