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

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

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

What relation is your brother's cousin's mother's brother in law's daughter's uncle to you ?

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

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