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

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

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

What relation is your daughter's grandmother's son's cousin's mother's husband to you ?

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

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