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