Based on prior knowledge, the DLIT_AG feature represents the duration of arterial hypertension. 

To analyze the relationship between DLIT_AG and the presence of chronic heart failure, we can examine the distribution of DLIT_AG values for both the "yes" and "no" classes.

Here is the analysis:

For patients with chronic heart failure:
-  DLIT_AG values may include categories such as 'more than 10 years', '6-10 years', 'three years', 'two years', 'one year', 'five years', and 'four years'.

For patients without chronic heart failure:
- DLIT_AG values may include categories such as 'there was no arterial hypertension' as well as possible durations of arterial hypertension, such as 'more than 10 years', '6-10 years', 'three years', 'two years', 'one year', 'five years', and 'four years'.

To generate the dictionary, we can summarize the possible DLIT_AG values for each target class:

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

Please note that this is a general analysis based on prior knowledge, and the actual distribution of DLIT_AG values for each target class may differ in the specific dataset. It is important to validate these findings using the data at hand.