Theory as i don't want to talk about my own methods.
Take dozen and they hit twice with dozen 1 and 2 then dozen 3 is at sleep.
We can only win once betting that dozen 3 will show for the next 3 attempts.
This mean that we have a window where two dozen repeat five times in a row.
How many times can that happen, i have show you the match at other topic.
Now if you can develop a MATRIX using EC with the odds 1 in 3 - then formation for the missing event would allow you to win two in a row.
For example i have a single R and a serie of two BB this two events would conintue to hit five times in a row with out a serie of three or higher will show.
Where you clearly could win twice.
One more example, a single B and a serie of three RRR and they would hit for five times in a row with out a serie of two showing, wish would have result in winning two in a row.
Same with following combinations, serie of three and one single and one serie of two and a single.
There is a sequense or one property state that is a tie and not working when you aim to win two in a row - that is a serie of two and three or the other way around - as you would aim to Catch the formation of one single and that formation would not allow you to place two bets and win two in a row.
The advantage with this method is that the power behind the selection method and Carch variant.
That would be 12 stages or levels with three attempts with a total of 36 bets.
Here is the frequense a property fall into sleep and where two states dominate.
Miss 1 time: 67.56% ( or 1/0.6756 =once every 1.48 spins)
Miss 2 times: (25/37)^2 = 0.4565 = 45.65% (or 1/0.4565 =once every 2.19 spins)
Miss 3 times: (25/37)^3 = 0.3084 = 30.84% (or 1/0.3084 =once every 3.24 spins)
Miss 4 times: (25/37)^4 = 0.2084 = 20.84% (or 1/0.2084 =once every 4.79 spins)
...etc... so. rounded up
Miss 5 times = once every 7 spins
Miss 6 times = once every 11 spins
Miss 7 times = once every 16 spins
Miss 8 times = once every 23 spins
Miss 9 times = once every 34 spins
Miss 10 times = once ever 50 spins
Miss 15 times = once every 358 spins
Miss 20 times = once every 2542 spins
Miss 24 as Mogul said = once every 12K spins
Miss 34 as notto said = once every 615K
Miss 50 times = once every 326M spins
Miss 100 times = once in a blue moon and stars, planets, meteors all aligned together