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

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

What relation is your cousin's father's daughter's aunt's brother in law to you ?

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

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

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