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

What relation is your father's son's cousin's grandmother to you ?

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

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

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

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