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

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

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

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

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

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