Upon analyzing the relationship between the feature "n_p_ecg_p_08" (LBBB on ECG at the time of admission to the hospital) and the task of determining whether the patient has chronic heart failure, here is the analysis and the corresponding dictionary:

Analyzing the feature:
- LBBB (Left Bundle Branch Block) on an ECG is an abnormal pattern that can be observed.
- LBBB can be an indicator of certain heart conditions but is not specific to chronic heart failure.
- Therefore, the presence or absence of LBBB alone may not directly determine whether the patient has chronic heart failure or not.

Based on this analysis, the dictionary would be as follows:

```json
{
	"no": ["no"],
	"yes": ["yes"]
}
```

Since LBBB is not directly indicative of chronic heart failure, the dictionary includes the respective values of "no" and "yes" for the "n_p_ecg_p_08" feature. However, please note that the "yes" category is included only because it is required to have non-empty lists for each target class.