Based on prior knowledge, it is expected that patients with a longer duration of arterial hypertension (DLIT_AG) are more likely to show chronic heart failure. Therefore, we can analyze the relationship between DLIT_AG and the presence of chronic heart failure.

Here is the requested dictionary:

```json
{
	"no": ["there was no arterial hypertension"],
	"yes": ["more than 10 years", "6-10 years", "three years", "two years", "one year", "five years", "four years"]
}
```

In this case, the patients who reported having no arterial hypertension are less likely to show chronic heart failure (target class "no"). Whereas the patients with a duration of arterial hypertension between more than 10 years and four years are more likely to show chronic heart failure (target class "yes").

Please note that this is an analysis based on prior knowledge, and further analysis of additional data may be necessary to confirm these relationships.