Based on prior knowledge, there may be a relationship between having pulmonary tuberculosis in the anamnesis (feature zab_leg_06) and the presence of chronic heart failure in patients.

To analyze this relationship further, I will examine the myocardial infarction complications data of patients with and without chronic heart failure and determine the possible values of feature zab_leg_06 for each target class.

Following is the dictionary containing the possible values of feature zab_leg_06 for each target class:

```json
{
	"no": ["no", "yes"],
	"yes": ["no", "yes"]
}
```
Please note that the possible values of feature zab_leg_06 for each target class are the same, which implies that there may not be a strong relationship between having pulmonary tuberculosis in the anamnesis (feature zab_leg_06) and the presence of chronic heart failure.