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

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

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

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

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

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