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

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

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

What relation is your brother's mother's sister's niece to you ?

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

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