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

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

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

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

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

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