From a story in National Geographic. I think all couples are identical twins.
Adults:
Marta and
EmmaSkyler and
Spencer Loretta and
LorraineRamon and Eurides
Jeff and
SteveJessica and
JackieCole and
ChristopherCamille and Kennerly
Mike and
BobDoug and
PhilJena and
JillDon and
DaveDeborah and
DianaNed and
Fred
Children:
Sarah and
KatieJohanna and
EvaEmily and
KateCarly and
LilyGillian and
LilyJohn and
SamDeclan and Finian