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

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

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

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

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

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