diff --git a/Lab5.java b/Lab5.java
new file mode 100644
index 0000000..1bacee4
--- /dev/null
+++ b/Lab5.java
@@ -0,0 +1,105 @@
+public class Lab5 {
+    public static void main(String[] args) {
+        StringBuilder txt = new StringBuilder("соціальна мережа, яка є мережею мікроблогів. Дає змогу користувачам надсилати короткі текстові повідомлення (до 2802 символів, до 2017 року — до 140 символів), використовуючи SMS,");
+        System.out.println(txt);
+        Text text = new Text(txt);
+        StringBuilder result = text.splitText();
+        System.out.println(result);
+    }
+}
+
+class Text {
+    private final StringBuilder textString;
+    public Text(StringBuilder textString){
+        this.textString = textString;
+    }
+
+    public StringBuilder splitText() {
+        StringBuilder result = new StringBuilder();
+        String[] sentenceStrings = textString.toString().split("(?<=[?.!])\\s?");
+        for (String s : sentenceStrings) {
+            StringBuilder sb = new StringBuilder(s);
+            Sentence sentence = new Sentence(sb);
+            result.append(sentence.splitSentence());
+        }
+        return result;
+    }
+
+}
+
+class Sentence {
+    private final StringBuilder sentence;
+
+    public Sentence(StringBuilder sentence) {
+        this.sentence = sentence;
+
+    }
+
+    public StringBuilder splitSentence() {
+        StringBuilder returnSentence = new StringBuilder();
+        String text = sentence.toString();
+        String[] words = text.split(" ");
+        for (String w : words) {
+            StringBuilder wb = new StringBuilder(w);
+            Word word = new Word(wb);
+            returnSentence.append(word.splitWord()).append(" ");
+        }
+        return returnSentence;
+
+    }
+}
+
+class Word {
+    private final StringBuilder word;
+
+    public Word(StringBuilder word) {
+        this.word = word;
+    }
+
+    public StringBuilder splitWord() {
+        StringBuilder returnWord = new StringBuilder();
+        String wordstring = word.toString();
+        String[] letters = wordstring.split("");
+        String firstLetter = wordstring.substring(0, 1);
+        returnWord.append(firstLetter);
+        for (String l: letters){
+            StringBuilder lb = new StringBuilder(l);
+            Letter letter = new Letter(lb);
+            if (firstLetter.equals(letter.getLetter().toString())){
+                returnWord.append("");
+            }else{
+                if(l.equals("!") || l.equals("?") || l.equals(".") || l.equals(",") || l.equals(":") || l.equals(";")){
+                    Punctuation punctuation = new Punctuation(lb);
+                    returnWord.append(punctuation.getPunctuation());
+                }else{
+                    returnWord.append(letter.getLetter());
+                }
+            }
+        }
+        return returnWord;
+    }
+}
+
+class Letter {
+    private final StringBuilder letter;
+
+    public Letter(StringBuilder letter) {
+        this.letter = letter;
+    }
+
+    public StringBuilder getLetter() {
+        return letter;
+    }
+}
+
+class Punctuation {
+    private final StringBuilder punctuation;
+
+    public Punctuation(StringBuilder punctuation) {
+        this.punctuation = punctuation;
+    }
+
+    public StringBuilder getPunctuation() {
+        return punctuation;
+    }
+}
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