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What relation is your cousin's aunt's brother in law's son to you ?

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

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

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

What relation is your brother's aunt's niece's grandfather to you ?

What relation is your mother's son's cousin's brother in law to you ?