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

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

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

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

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

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