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

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

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

What relation is your aunt's son's brother's mother's niece's daughter in law to you ?

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

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