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

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

What relation is your cousin's aunt's niece's uncle's son's daughter to you ?

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

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

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