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

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

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

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

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

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