Shakespeare quickly began to utilize a variety of modifications from the standard sentence to avoid such boredom. Some of them merit special attention because of their frequent occurrence throughout Macbeth. Instead of concluding the sentence with a stressed syllable, Shakespeare usually added an unstressed syllable. This creates a more energetic rhythm in his speech. He also frequently inserted words and phrases that contain consonants but no vowels (consonantal verbs). These words are called "unstressable" items. The most common one is "to-be", which appears almost every other line of the play as well as several times in Henry V. It is used to describe future events ("To be or not to be...that is the question"). Another common feature of Macbeth is its use of adjectives after nouns they modify. In English, we often add adverbs to sentences to show how something was done. For example, if I want to say that John laughed loudly when he heard some news, I would say that he laughed loudly. But in Macbeth, Shakespeare often uses an adjective instead: "John laughed loudly". This form of expression is very common in poetry and plays written before modern grammars were available to correct people's writing habits. Finally, Macbeth contains many lines that consist of just one word. Many of these single words are proper names.