entence = LOREM_IPSUM.repeat(Math.ceil(INITIAL_WORDS / wordsInSentence));
    const repeatedWords = repeatedSentence.split(" ");
    const input = repeatedWords.slice(0, INITIAL_WORDS).join(" ");
    document.execCommand("insertText", false, input);
    wc.textContent = INITIAL_WORDS;

    // Mark the initial words as spelling errors.
    try {
      for (let i = 0, wordStart = 0; i < INITIAL_WORDS; i++) {
        const wordEnd = wordStart + repeatedWords[i].length;
        const range = createRange(main, w