Bonjour
2- He is the father of my father or my mother = c'est mon grand-père.
4- She is the daughter of my uncle or my aunt == C'est ma cousine.
8- He is a child of masculine sex ==> c'est un garçon.
10- She is the daughter of my father and my mother ==> c'est ma sœur.
11- She is the mother of my father or my mother ===> C'est ma grand-mère