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What relation is your cousin's aunt's niece's grandfather to you ?

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

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

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

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

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