Based on the feature description provided, we are analyzing the relationship between the feature "zab_leg_02" (which represents chronic bronchitis in the anamnesis) and the presence of chronic heart failure in the myocardial infarction complications data.

To analyze this relationship, we need to examine the values of the feature "zab_leg_02" for both the target class "no" (indicating no chronic heart failure) and the target class "yes" (indicating chronic heart failure). We will create a dictionary with the format specified above, including the possible values for each target class.

As we do not have information about other values that might exist for the feature "zab_leg_02", we will include all possible values (i.e., 'no' and 'yes') in the dictionary.

Based on the analysis, the dictionary will be as follows:

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

Since the feature "zab_leg_02" is a binary categorical variable with only two possible values ('no' and 'yes'), we have reported the corresponding values for each target class.