```json
{
	"no": ["no"],  
	"yes": ["yes"]
}
```
Based on the given feature "Complete LBBB in the anamnesis" (np_08), to determine if a patient shows chronic heart failure, there are only two possible categories: "no" and "yes". Therefore, the feature values for the target class "no" would be ["no"] and the feature values for the target class "yes" would be ["yes"].