Based on my prior knowledge, diabetes mellitus in the anamnesis (endocr_01) can be associated with an increased risk of chronic heart failure. To analyze the relationship between endocr_01 and the presence of chronic heart failure, I will examine the distribution of endocr_01 categories within the myocardial infarction complications data.

Here is a dictionary that provides the possible values of feature endocr_01 for each target class:

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

Explanation:
- For the target class "no" (indicating no chronic heart failure), the only possible value of endocr_01 is "no".
- For the target class "yes" (indicating chronic heart failure), both "no" and "yes" are possible values of endocr_01.

Please note that the values of endocr_01 that are hard to predict are not included in the dictionary, as per the given instructions.