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

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

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

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

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

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