Система "Final"

Sets of numbers grouped by their last digit

7 groups as follows
0-10-20-30
1-11-21-31
2-12-22-32
3-13-23-33
4-14-24-34
5-15-25-35
6-16-26-36

Fore Play:

Record 39 spins

Look for any final that only has one number that has appeared Eg. If ( 11-21-31 ) have not spun in last 39 spins and only the (01) has shown the we will take the '1' finals - 1-11-21-31

Take this 'finals' set of 4 numbers for 9 spins or until you get a win If you have 2 'finals' with only one win - take them both - separately.

I'm not sure this system is any good.
It might be ok to play for a little organized fun but certainly not a system you would expect to pay money for and I believe someone is selling it - you work that out.