My sister's father is my ...
father
Your aunt's children are your...
cousins
Your grandparents' daughter is your...
mum
You're my sister. My mum and dad are your...
parents
I have brother. He is my dad's...
son
You're my son. I am your…
father
My mum and your mum are sisters. I am your…
cousin
Your uncle's son is your...
Cousin
Your father's mother and father are your...
grandparents
Your father's father is your...
grandad
Your father's mother is your...
granny
Your father's brother is your...
uncle
Your sister's brother is your...
brother
Your mother is my mum. Your father is my dad. I'm your…
sister/brother
Your brother's mother is your...
mum
Your mother's sister is your...
aunt
Mum is her father's ...
daughter
You are the son of my son. You are my…
grandson