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

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

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

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

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

What relation is your sister's grandmother's grandson's uncle to you ?