It is a case to think about a case where there is a spouse.
In this case, spouse will always be the heir.
Article 890 The spouse of a decedent shall always be an heir. In this case, if there is a person to become an heir pursuant to the provisions of Article 887 or the preceding Article, the spouse shall be of the same rank as thatperson
The next question is whether or not there is a child.
First rank heir
Is there any child to the deceased? (In this case, including cases where they have already died, including adopted cases )?
The choices here are: