third-person object pronouns. Much of northern Spain, as well as Andalusia and Latin America, uniformly uses an etymological, case-based system in which retain their accusative value, while is only used for indirect objects. That said, there is competition between that system and others in much of Spain. These other systems are either the purely semantic system, in which is reserved for non-countable objects, while refer to countable objects, and there is no marking for case, as found in the traditional speech of much of northwestern Castile, eastern Cantabria and part of the western Basque Country, or hybrid systems in-between the two extremes. One such hybrid system, largely identical to the semantic system but with a gender distinction for non-countable objects (as in, 'this milk has to be thrown out', where the purely semantic system would use ), was dominant in the written Spanish of Golden Age Castile. A number of phonetic features which have since become restricted to nonstandard speech were frequently represented in writing during the Spanish Golden Age. For example, the handling of syllable-final labial and velar consonants in a number of Latinate words, such as 'concept' and 'absolve' was highly variable during this period. Typically, these forms alternated between forms with and without the coda consonant, such as 'accident'. There were also cases of labials becoming u, as in 'concept' or 'captive', and interchanges of and , as in 'correct'. These labial and velar consonants have been preserved in most words in the modern standard, while rural, nonstandard varieties typically prohibit syllable-final labial and velar consonants. Likewise, there was a frequent interchange between non-stressed and and between non-stressed and , as in much modern nonstandard Spanish. That said, a preference for the now-standard forms was beginning to form, as Juan de Valdés recommends forms like 'vanity/cover' over their competitors . Modern era In 1713, with the foundation of the Royal Spanish Academy, part of the Academy's explicit purpose was the normalization of the language, "to fix the words and expressions of the Castilian language with the greatest possible propriety, elegance and purity". Throughout the 18th century the Academy developed means of standardization. Between 1726 and 1793 it published a "dictionary of the Castilian language, in which the true sense of the words is explained, as well as their nature and quality, along with the phrases and forms of speech, and the proverbs, sayings, and other matters pertinent