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

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

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

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

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

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