It can take more than 3 losses depending on the number of street bets required and your bankroll.
You say: The only progression you can recover from that is 1,3 9.
That is wrong.
Let's say first bet losses and we are -4u. The last spin result requires a 5th line bet. When a 5th line bet is required we switch to streets.
Let's say that we have 5 streets. We can now place a bet with 1u per street. 12 - numbers of streets to bet on = profit.
12-5 = 7u. We had a -4u loss and now we are up a net +3u.
I suggest you reread everything I've posted and learn the rules.
I don't follow the order of your spin results with it being in two columns.
First of all, I was incorrect about what I said about only winning "1 units". The conventional
thinking that I got caught in was betting 1 unit per dozen. In this case we are betting
2 units per dozen, splitting it across double streets. So the payoff betting 2 units per dozen is
3 units. My mistake. I tend to think to fast. The unit size is different. And the math.
To answer your question at the end about "two columbs" or "two dozens", betting 24 numbers is
2 dozen, 4 double streets, or 8 streets. Playing 4 double streets is 2 dozen. Which pays
2-1.
Playing the occasional extra street makes the math and the chances a little worse, if you get over
8 streets, or 4 double streets, which is what you look for.
Yes, if you bet 5 streets, that cuts down the exposure and increases the profit equation.
But my understanding of the instructions was that you waited for enough streets to be hit
for you to cover 4 double streets by existing street hits, or filling in the streets into
groups of two by adding the streets that "pair" with a hit street.
Forgive me if I'm a little unclear about only betting 5 or 7 streets (which is still better than
![8)]( "Cool")
I'll review what you said to see if I can understand it better, but the profit math is still a little hard.
