1.2. A family is composed
(1) of the father or the mother or, in the cases determined by regulation, another person designated therein, and of the minor children living with the mother, father or person who are neither married nor the father or mother of a child, and of the children of full age who attend, within the meaning of the regulations, an educational institution and who are neither the spouse of another person nor the father or mother of a child;
(2) of the spouses and any child described in subparagraph 1; or
(3) of the spouses, where there are no children.
However, a person shall remain, become or cease to be a member of a family in such circumstances as are prescribed by regulation.