Choose an EC bet, say Bet same as last, record the LW, and once The Ws equal the Losses switch the bets to Opposite of last outcome, and restart the counting. Once the LW evens out, return to Same as last.
For the progression I used a no-stop d'alembert and ran a quick test with today's permanences.
For single dozens, according to their probability, you should switch bets when the Losses per Wins approach the 2:1 ratio. Say bet for the last dozen to repeat, and once the counting reads something like 1 Win and 2 Losses, or 2 Wins and 4 Losses (not necessarily in order) you switch and bet for the second last dozen to repeat.
In the following example I start by betting High if previous outcome was Odd, and Low if previous outcome was Even. Then I switch bets: if p.o. was Odd I now bet Low and if p.o. was Even I now bet High. And so on.
Note every time it switches bets the bank is at a new High.