 Even within a single sprachraum, there can be different, but closely related, languages, otherwise known as dialect continua.A classic example is the varieties of Chinese, which can be mutually unintelligible in spoken form, but are typically considered the same language (or, at least, closely related) and have a unified non-phonetic writing system.Arabic has a similar situation, but its writing system (an abjad) reflects the pronunciation and grammar of a common literary language (Modern Standard Arabic).