I took the idea by reversing completely the system DNA of roulette, by the way, I've never understood what a betting 1 dozen and 1 column has to do with the law of the thirds.
So here we go:
On the table I separate numbers in groups of 4, those groups are:
1 4 7 10
2 5 8 11
3 6 9 12
13 16 19 22
14 17 20 23
15 18 21 24
25 28 31 34
26 29 32 35
27 30 33 36
Every time there are 2 numbers of the same group, back to back, in a row, (that's the trigger) bet the other 2 dozens and the other 2 columns for a total bet of 4 units.
Example:
After number 1 comes number 7, in this case you should bet the 2nd, 3rd dozens plus the 2nd and 3rd columns with 1 unit each.
There are 5 numbers which make us lose 4 units, 16 numbers which make us lose 1 unit and 16 numbers which make us win 2 units net.
If you win that's good, wait for the next trigger opportunity, if you lost, no matter if it's 1 or 4 units, wait for the next trigger.
I'm going to explain a bit about the steps of the progression, since our expected payout is 2 units we should divide the running negative total by 2, for example we lose 4 units so the next bet must be 2 units on each of the dozens and columns and by winning it we are breaking even.
Initial bet 1 unit on each 2 dozens and 2 columns, win +2, lose -1 or -4
-1 } bet 1 unit on each 2 dozens and 2 columns, win +1, lose -2 or -5
-2 } bet 1 unit on each 2 dozens and 2 columns, win and break even, lose -3 or -6
-3 } bet 2 units on each 2 dozens and 2 columns, win +1, lose -5 or -11
-4 } bet 2 units on each 2 dozens and 2 columns, win and break even, lose -6 or -12
-5 } bet 3 units on each 2 dozens and 2 columns, win +1, lose -8 or -17
-6 } bet 3 units on each 2 dozens and 2 columns, win and break even, lose -9 or -18
-7 } bet 4 units on each 2 dozens and 2 columns, win +1, lose -11 or -23
-8 } bet 4 units on each 2 dozens and 2 columns, win and break even, lose -12 or -24
-9 } bet 5 units on each 2 dozens and 2 columns, win +1, lose -14 or -29
-10 } bet 5 units on each 2 dozens and 2 columns, win and break even, lose -15 or -30
-11 } bet 6 units on each 2 dozens and 2 columns, win +1, lose -17 or -35
-12 } bet 6 units on each 2 dozens and 2 columns, win and break even, lose -18 or -36
-13 } bet 7 units on each 2 dozens and 2 columns, win +1, lose -20 or -41
-14 } bet 7 units on each 2 dozens and 2 columns, win and break even, lose -21 or -42
-15 } bet 8 units on each 2 dozens and 2 columns, win +1, lose -23 or -47
-16 } bet 8 units on each 2 dozens and 2 columns, win and break even, lose -24 or -48
-17 } bet 9 units on each 2 dozens and 2 columns, win +1, lose -26 or -53
-18 } bet 9 units on each 2 dozens and 2 columns, win and break even, lose -27 or -54
-19 } bet 10 units on each 2 dozens and 2 columns, win +1, lose -29 or -59
-20 } bet 10 units on each 2 dozens and 2 columns, win and break even, lose -30 or -60