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

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

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

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

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

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