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

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

What relation is your mother's sister's husband's cousin to you ?

What relation is your mother's husband's sister's nephew to you ?

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

What relation is your grandmother's grandson's mother's nephew to you ?