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

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

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

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

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

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