Based on prior knowledge, it is difficult to determine the relationship between the feature "n_p_ecg_p_09" and the occurrence of chronic heart failure. However, we can still analyze the provided data and generate a dictionary to show the possible values of the feature for each target class.

Here is the dictionary containing the possible values of the feature "n_p_ecg_p_09" for each target class:

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

Note that since there are only two categories ("no" and "yes") for the feature "n_p_ecg_p_09" and we don't have information on other possible values, we include only those categories in the respective target class lists.