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

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

What relation is your sister's aunt's niece's brother's brother in law to you ?

What relation is your sister's aunt's niece's wife to you ?

What relation is your brother's father's mother's grandson's father in law to you ?

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