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

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

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

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

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

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