Infer the sequential behavior from the clocked trace table, including which clock edge captures the input and what value is stored.
The following stimulus and observed outputs are a newly prepared trace for this exercise:
| clock edge | a at edge | q after edge |
|---|---|---|
| ↑ | 0 | 1 |
| ↑ | 1 | 0 |
| ↑ | 0 | 1 |
| ↑ | 1 | 0 |