It can be played on any dozen of course!
I tried a play on the first dozen, and it took 188 spins to get 208 units.
I have not tried this before, at least not exactly, may be some similar.
The progression is 1 unit on a loss
and the same bet on a win, if back in balance, otherwise start over.
First bet 1 on the dozen.
next(if loss) keep the old bet and and add one DS in the dozen.
as long not on plus, we continue adding until first all DS except
between 4-9 is full. After that the four streets.
if we still are back we use the corners, first so they not overlap, but if we need we use them. We use the overlapped DS and continue to fill the dozen.
This time I never come more than to four corners.
I have just tried this once, and know a session can be much harder, but a play on only the outside dozen can be hard as well, here it can hit better.