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

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

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

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

What relation is your son's sister's mother's daughter to you ?

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