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

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

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

What relation is your brother's mother's husband's wife to you ?

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

What relation is your husband's daughter's grandmother's brother to you ?