diff --git a/Lesson4/regExp.html b/Lesson4/regExp.html
new file mode 100644
index 0000000..c7dd439
--- /dev/null
+++ b/Lesson4/regExp.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Document</title>
+</head>
+<body>
+    <h5>Original text</h5>
+    <p>Lorem 'ipsum' dolor sit amet 'consectetur' adipisicing elit. Neque, aren't .Lorem 'ipsum' dolor sit amet 'consectetur' adipisicing elit. Neque, aren't .Lorem 'ipsum' dolor sit amet 'consectetur' adipisicing elit. Neque, aren't .Lorem 'ipsum' dolor sit amet 'consectetur' adipisicing elit. Neque, aren't .Lorem 'ipsum' dolor sit amet 'consectetur' adipisicing elit. Neque, aren't .Lorem 'ipsum' dolor sit amet 'consectetur' adipisicing elit. Neque, aren't .Lorem 'ipsum' dolor sit amet 'consectetur' adipisicing elit. Neque, aren't .Lorem 'ipsum' dolor sit amet 'consectetur' adipisicing elit. Neque, aren't .Lorem 'ipsum' dolor sit amet 'consectetur' adipisicing elit. Neque, aren't .Lorem 'ipsum' dolor sit amet 'consectetur' adipisicing elit. Neque, aren't .Lorem 'ipsum' dolor sit amet 'consectetur' adipisicing elit. Neque, aren't .Lorem 'ipsum' dolor sit amet 'consectetur' adipisicing elit. Neque, aren't .Lorem 'ipsum' dolor sit amet 'consectetur' adipisicing elit. Neque, aren't .Lorem 'ipsum' dolor sit amet 'consectetur' adipisicing elit. Neque, aren't .Lorem 'ipsum' dolor sit amet 'consectetur' adipisicing elit. Neque, aren't .Lorem 'ipsum' dolor sit amet 'consectetur' adipisicing elit. Neque, aren't .Lorem 'ipsum' dolor sit amet 'consectetur' adipisicing elit. Neque, aren't .Lorem 'ipsum' dolor sit amet 'consectetur' adipisicing elit. Neque, aren't.</p>
+    <h4>Regexp text</h4>
+    <p class="regexp"></p>
+<script>
+    document.addEventListener('DOMContentLoaded',e => {
+        
+        let text =  document.querySelector('p').textContent;
+        
+        text = text.replaceAll(/\s'\b/g,' "')
+        
+        text = text.replaceAll(/'\B/g, '" ')
+    
+        document.querySelector('.regexp').innerText = text;
+    });
+</script>
+</body>
+</html>
\ No newline at end of file
