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

What relation is your wife's son's uncle's aunt to you ?

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

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

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

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