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

What relation is your brother's aunt's nephew's daughter to you ?

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

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

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

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