The Mommies.

The Mommies love the Daddies.

The Daddies hurt the Mommies.
The Mommies leave the Daddies. 

The Daddies leave the Babies. 

The Mommies spoil the Babies

The Babies hurt the Mommies. 

The Mommies hurt themselves. 

The Mommies leave the Babies. 

The Babies become Daddies.

The Babies become Mommies.

And so on...