Based on my prior knowledge and analysis, there may be a relationship between the feature IBS_POST and the presence of chronic heart failure in patients with myocardial infarction complications. 

To create the dictionary, I will first analyze the data and categorize the values of IBS_POST based on the target variable (presence of chronic heart failure). 

Based on the above information, the dictionary will be as follows:
```json
{
	"no": ["there was no СHD", "exertional angina pectoris"],
	"yes": ["unstable angina pectoris"]
}
```
Please note that I have excluded the category "unstable angina pectoris" from the "no" list because it does not seem to be strongly related to chronic heart failure.