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

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

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

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

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

What relation is your mother's cousin's son's brother in law to you ?