1- Aunt (parent's sister)'s child and half-uncle (other parent's half-brother)'s child simultaneously.
2- Half-aunt (parent's half-sister)'s child and uncle (other parent's brother)'s child simultaneously.
3- Living being that has zero parents and three grandparents in common with another living being.
Seventh-cousin-five-times-removed (7C5R).
My seventh-cousin-5X-removed is a good person.
Great-grandparent's male first cousin.
My first great-great-cousin-uncle is a good person.
The daughter-in-law of one's grandparent-in-law's sibling.
My co-cousin-aunt-in-law is a good person.
Someone who, in relation to others, has zero parents, zero grandparents, zero great-grandparents and fifteen great-great-grandparents in common.
Irregular-octuple-third-cousin.
Living being that has zero parents, zero grandparents, zero great-grandparents and fifteen great-great-grandparents in common with other living beings.
irregular-octuple-third-cousin.