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

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

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

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

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

What relation is your aunt's nephew's mother's brother in law to you ?