Then what do their children take for last names? Each generation we have a doubling of name length?
Gen 1: FirstName P1-LastName P2-LastName
Gen 2: FirstName P1-P1-LastName P1-P2-LastName P2-P1-LastName P2-P2-LastName
Gen 3: FirstName P1-P1-P1-LastName P1-P1-P2-LastName P1-P2-P1-LastName P1-P2-P2-LastName P2-P1-P1-LastName P2-P1-P2-LastName P2-P2-P1-LastName P2-P2-P2-LastName
and so on...