double-half-first-cousin

1- Child of parent’s half-sister and of other parent’s half-brother at the same time.
2- Double-half-pibling's child / Two parents's half-nibling.
3- Person who, in relation to the other person, has zero parents and two grandparents

on the same side (maternal or paternal) or two grandparents from different sides (one maternal grandparent and one paternal grandparent).
4-Double-half-cousin.
5- Double-half-1C.

1- Child of parent's maternal half-sibling and of parent's paternal half-sibling at the same time.
2- Child of parent's half-sibling and of other parent's half-sibling at the same time.
3- Double-half-pibling's child / Two parents's half-nibling.
4- Person who, in relation to the other person, has zero parents and two grandparents on the same side (maternal or paternal) or two grandparents from different sides (one maternal grandparent and one paternal grandparent).
5- Double-half-cousin.
6- Double-half-1C.

Child of their parent’s half-sibling with their other parent’s half-sibling or the child of their mother's maternal half-sibling with mother's paternal half-sibling or the child of their father's maternal half-sibling with father's paternal half-sibling.