double-half-first-cousin

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.

My double-half-first-cousin is a good person.

double-half-first cousin

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.

My double-half-first cousin is a good person.

double-first great-cousin-niece

Daughter of their maternal first cousin’s child with the paternal first cousin’s child or double-first cousin’s granddaughter.

My double-first great-cousin-niece is a good person.

double-first great-cousin-aunt

Daughter of their great-grandparent’s full sibling with the other great-grandparent’s full sibling.

My double-first great-cousin-aunt is a good person.

double-first cousin-aunt

Daughter of their grandparent’s full sibling with the other grandparent’s full sibling.

My double-first cousin-aunt is a good person.

double-fourth-cousin

Someone who, in relation to others, has zero parents, zero grandparents, zero great-grandparents, zero great-great-grandparents and four great-great-great-grandparents in common.

Double-fourth-cousin.

double-fourth-cousin

Double-4C: Person who, in relation to the other person, has zero parents, zero grandparents, zero great-grandparents, zero great-great-grandparents and four great-great-great-grandparents in common.

My double-fourth-cousin is a good person.