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

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

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

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

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

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