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

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

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

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

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

What relation is your father's daughter's aunt's niece to you ?