This should be fun...
I have two older sisters and two younger brothers.
My parents got divorced and both re-married. My dad got married to my mother's sister, so my aunt.
My aunt (dad's new wife) brought in two step-sisters and two step-brothers (which are also my cousins/neices)
My mom's new hubs brought in three step-sisters and two step-brothers. And he also had a son with my mother, so that would be my half-brother.
If I count only my real ones, I have two sisters and three brothers.
But if I count all of them, I have seven sisters and seven brothers.