I'll give it a shot. This is one dozen bet.
Procedure: Wait for any NEW dozen to hit. Now, you bet that the third unhit dozen will hit. (IF a dozen repeats- NO BETS!)
This is betting for pattern 123, 132, 231, 213, 312, 321 etc, to be formed.
Progression: +1u for each loss, (until hit, then reset to 1u), This progression is not perfect and can take up to 5 losses before drawdown. (Losses do happen, but recovery seems to be good)
First test was played with 5u bets
Test 2. Big drawdowns,