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

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

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

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

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

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