Castilianization of the Latin adjective pronoun cuius, singular genitive of quis or qui quae quod or crux, which, that, what or who, term that evolved to whose ( which ) and that in some archaic parts of our peninsula is it still in the bable or Extremadura. Cuyu eris, Babe? Some alistanos even say: do's who sos, rapa? Cervantes also said: in a village of la Mancha, whose name I don't remember.
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