| Level 6 (top) |
N6A N6B N6C | |
|---|---|---|
| Level 5 |
N5A |
N5B |
| Level 4 |
N4A N4B N4C | |
| Level 3 |
N3A |
N3B |
| Level 2 |
N2A |
N2B |
| Level 1 (bottom) |
N1 |
| Level 6 (top) |
N6A N6B N6C | |
|---|---|---|
| Level 5 |
N5A |
N5B |
| Level 4 |
N4A N4B N4C | |
| Level 3 |
N3A |
N3B |
| Level 2 |
N2A |
N2B |
| Level 1 (bottom) |
N1 |
| Level 6 (top) |
N6A N6B N6C | |
|---|---|---|
| Level 5 |
N5A |
N5B |
| Level 4 |
N4A N4B N4C | |
| Level 3 |
N3A |
N3B |
| Level 2 |
N2A |
N2B |
| Level 1 (bottom) |
N1 |