In very informal spoken Indonesian, various words are replaced with those of a less formal nature (e.g. tidak (no) is often replaced with the Javanese nggak whilst seperti (like, similar to) is often replaced with kayak (pronounced kai-yah)). As for pronunciation, the diphthongs ai and au on the end of base words are typically pronounced as /e/ and /o/. In informal writing the spelling of words is modified to reflect the actual pronunciation in a way that can be produced with less effort. E.g.: capai becomes cape or capek, pakai become pake, kalau becomes kalo
