and affricates, and other children show the reverse. Also, some children have been observed fronting palatoalveolars, others retract lamino-alveolars, and still others retract both. Glottalization was not found to be any more difficult than aspiration. That is significant with the Yucatec Mayan use of ejectives. Glottal constriction is high in the developmental hierarchy, and features like [fricative], [apical], or [fortis] are found to be later acquired. Grammar Like almost all Mayan languages, Yucatec Maya is verb-initial. Word order varies between VOS and VSO, with VOS being the most common. Many sentences may appear to be SVO, but this order is due to a topic–comment system similar to that of Japanese. One of the most widely studied areas of Yucatec is the semantics of time in the language. Yucatec, like many other languages of the world (Chinese, Kalaallisut, arguably Guaraní and others) does not have the grammatical category of tense. Temporal information is encoded by a combination of aspect, inherent lexical aspect (aktionsart), and pragmatically governed conversational inferences. Yucatec is unusual in lacking temporal connectives such as 'before' and 'after'. Another aspect of the language is the core-argument marking strategy, which is a 'fluid S system' in the typology of Dixon (1994) where intransitive subjects are encoded like agents or patients based upon a number of semantic properties as well as the perfectivity of the event. Verb paradigm Orthography The Maya were literate in pre-Columbian times, when the language was written using Maya script. The language itself can be traced back to proto-Yucatecan, the ancestor of modern Yucatec Maya, Itza, Lacandon and Mopan. Even further back, the language is ultimately related to all other Maya languages through proto-Mayan itself. Yucatec Maya is now written in the Latin script. This was introduced during the Spanish Conquest of Yucatán which began in the early 16th century, and the now-antiquated conventions of Spanish orthography of that period ("Colonial orthography") were adapted to transcribe Yucatec Maya. This included the use of x for the postalveolar fricative sound (which is often written in English as sh), a sound that in Spanish has since turned into a velar fricative nowadays spelled j. In colonial times a "reversed c" (ɔ) was often used to represent , which is now more usually represented with (and with in the revised ALMG orthography). Examples Use in modern media and popular culture Yucatec-language programming is carried by the CDI's radio stations XEXPUJ-AM