Based on prior knowledge and experience, the number of doors can have an impact on the decision to buy a car. Here's an analysis of the relationship between the feature "doors" and the task of rating the decision to buy the car.

- Unacceptable: It is likely that cars with only 2 doors might be rated as unacceptable for this task. Other possibilities could include cars with 5 or more doors, as these might be perceived as too large or not suitable for the purpose.

- Acceptable: Cars with 3 or 4 doors are often considered acceptable options. These door configurations are generally practical and can accommodate a reasonable number of passengers.

- Good: Cars with 4 doors are commonly considered good choices for various reasons such as ease of access and passenger comfort. Other possibilities could include cars with 3 doors if a particular design or style is preferred.

- Very Good: Cars with 5 or more doors might be viewed as very good options for those seeking maximum practicality, especially in terms of passenger capacity and cargo space.

Based on this analysis, the dictionary would be structured as follows:

```json
{
   "unacceptable": ["2", "5more"],
   "acceptable": ["3", "4"],
   "good": ["4"],
   "very good": ["5more"]
}
```

Note that "2" and "5more" are included in the "unacceptable" list, "3" and "4" are in the "acceptable" and "good" lists, and "5more" appears in the "very good" list. As per the requirements, only the values that are considered to be strongly related to the target class are included in the respective lists.