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

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

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

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

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

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