To analyze the relationship between the "IM_PG_P" feature and the presence of chronic heart failure in patients with myocardial infarction complications, we need to examine the distribution of "IM_PG_P" values across the two target classes: "no" and "yes".

Here is the analysis and the resultant dictionary:

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

Explanation:
- For patients without chronic heart failure (target class "no"), there is a possibility of having a right ventricular myocardial infarction ("IM_PG_P" = "yes"). Therefore, the possible values of "IM_PG_P" for the "no" class are ["yes"].
- For patients with chronic heart failure (target class "yes"), it is unlikely to have a right ventricular myocardial infarction ("IM_PG_P" = "no"). Therefore, the possible values of "IM_PG_P" for the "yes" class are ["no"].

Please note that only the possible values of "IM_PG_P" that are informative for each target class are included in the dictionary.