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

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

What relation is your daughter's grandmother's son's niece to you ?

What relation is your aunt's sister's father's wife to you ?

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

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