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

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

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

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

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

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