Let's look in more detail at the example we saw above. In this SVO English sentence, the verb wrote is followed by its object a letter and the prepositional phrase to a friend, in which the preposition to is followed by its argument a friend. Arabic, with a VSO order, also has the verb before the object and prepositions. By contrast, in the Japanese example that follows, each of these orderings is reversed; the verb is preceded by its arguments, and the postposition follows its argument. .1 shows examples of other word order differences. All of these word order differences between languages can cause problems for translation, requiring the system to do huge structural reorderings as it generates the output.