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

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

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

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

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

What relation is your father's daughter's cousin's uncle to you ?