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

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

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

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

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

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