Based on prior knowledge, a heart rate below 60 can be indicative of bradycardia, which is a heart rhythm disorder. Chronic heart failure (CHF) is a condition where the heart is unable to pump blood effectively.

To analyze the relationship between the feature "ritm_ecg_p_08" and the task of determining if the patient has chronic heart failure, we can examine the possible values of "ritm_ecg_p_08" for each target class.

Let's create the dictionary:

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

In this case, the possible values for the target class "no" are ['no'], indicating that patients without chronic heart failure have a "ritm_ecg_p_08" value of "no". Similarly, patients with chronic heart failure have a "ritm_ecg_p_08" value of "yes".

Since there are only two possible values for "ritm_ecg_p_08" (no and yes), we include them in the dictionary.