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What relation is your brother's sister's cousin's grandfather to you ?

What relation is your sister's uncle's son's aunt to you ?

What relation is your brother's father's sister's nephew's daughter in law to you ?

What relation is your father's brother's son's grandfather to you ?

What relation is your mother's sister's cousin's daughter to you ?

What relation is your father's sister's nephew's mother's niece's son to you ?