This is a wheel-based system/Trigger; You wait for minimum (2) hits wihin one side of the wheel , Then when the *other side* of the wheel hits, you bet the 2 unhit sectors-of 5 (see pic!)
Progression; Double bets after each 2 losses in a row,
OR else, a simple 10 numbers negative 1 1 1 2 2 3 4 6 8 11 16 22 30 42 58 80 111 154 213