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

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

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

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

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

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