This is how i would play if i use roulette systems and would play even money bets.
This is about to include zero toward you play using numbers.
Sectors of three using the wheel layout - where zero comes with first sector - so when you observe and play even money bets you will at some times play 19 numbers and not 18 numbers.
0. 26 0 32 15
1. 19 4 21
2. 2 25 17
3. 34 6 27
4. 13 36 11
5. 30 8 23
6. 10 5 24
7. 16 33 1
8. 20 14 31
9. 9 22 18
10. 29 7 28
11. 12 35 3
Now you use and divide the sectors into four areas using the bi-modal effect - the opposite sector and its neighbors.
The crossovers or the bi-modal sectors are as follows.
0-6
1-7
2-8
3-9
4-10
5-11
So if you have sector 1 hitting then sectors 0 1 2 and 6 7 8 is your 19 numbers.
The other 18 numbers is the opposite bi-modal areas.
When you chart you do as following.
O = Opposite S = Same
sectors
1
4 O
2 O
7 S
9 O
3 S
2 S
6 O
4 O
4 S
3 S
1 O
7 S
8 S
3 O
10 S
11 S
3 O
6 O
10 O
18 9
28 10 B
24 6 R
12 11 B
34 3 R
32 0 R W
29 10 R
30 5 B
7 10 B L
8 5 B L
16 7 R
27 3 R L
36 4 B W
26 0 R
3 11 B W
22 9 R
20 8 B
6 3 B W
6 3 B
3 11 R
5 6 B W
30 5 B
22 9 R
12 11 R W
36 4 B
17 2 R
24 6 R L
30 5 B L
34 3 R
24 6 R L
6 3 R W
14 8 B
9 9 B L
15 0 R W
1 7 B
20 8 B L
11 4 R L
14
19
2
6
31
8
10