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

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

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

What relation is your mother's son's father's wife's daughter's aunt to you ?

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

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