System 1-3-2-6-1

Start the game by placing 1 dollar. If you win, put 3 dollars. If you win again, put your doubled initial bet - $ 2. In case of another win, put 6 initial bets - 6 dollars. If you win here, set your initial bet to 1 dollar and repeat the whole sequence when you continue winning. If you lose at any point in the game, then your next bet must be a single one - $ 1.
The main idea of ​​this system is that you have to win 4 times in a row. If so, you win 12 initial bets. If you have 3 wins in a row and lose the fourth game, then you have a zero result. After losing the third game, get a profit in 2 initial bets. Playing after a single win, lose 2 bets.