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

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

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

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

What relation is your father's sister's husband's daughter to you ?

What relation is your son's uncle's mother's cousin's daughter's father in law to you ?