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

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

What relation is your mother's son's grandmother's grandson to you ?

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

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

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