diff --git a/Program.cs b/Program.cs
index 02f6df5..3483da4 100644
--- a/Program.cs
+++ b/Program.cs
@@ -13,8 +13,8 @@ class Program {
             Console.WriteLine("Inserire un'opzione:");
             Console.WriteLine("1. Conta spazi pre maiuscola");
             Console.WriteLine("2. Converti in binario");
-            Console.WriteLine("3. Primo carattere maiuscolo");
-            Console.WriteLine("4. Sostituisci sottostringa");
+            Console.WriteLine("3. Stampa a gruppi di 3");
+            Console.WriteLine("4. Codifica");
             Console.WriteLine("5. Parola palindroma pari");
             Console.WriteLine("0. Esci");
             Console.Write("Scelta: ");
@@ -35,30 +35,11 @@ class Program {
                     break;
                 case 3:
                     Console.Clear();
-                    stringa1 = Input();
-
-                    /* if (Controllo2(stringa1, LUNGHEZZA)) {
-                         Console.WriteLine(PrimoCarattereMaiuscolo(stringa1));
-                     }
-                     else {
-                         Console.WriteLine($"Errore: la frase non può essere più lunga di {LUNGHEZZA} caratteri");
-                     }*/
+                    GruppiDiTre(Input());
                     Pausa();
                     break;
                 case 4:
                     Console.Clear();
-                    Console.WriteLine("È richiesta la frase in cui effettuare la ricerca");
-                    stringa1 = Input();
-                    Console.WriteLine();
-                    Console.WriteLine("È richiesta la frase che verrà sostituita");
-                    stringa2 = Input();
-                    Console.WriteLine();
-                    /*if (Controllo2(stringa2, stringa1.Length)) {
-                        Console.WriteLine(TrovaESostituisci(stringa1, stringa2));
-                    }
-                    else {
-                        Console.WriteLine($"Errore: la frase da cercare non può essere più lunga della frase in cui cercare");
-                    }*/
                     Pausa();
                     break;
                 case 5:
@@ -66,11 +47,6 @@ class Program {
                     //Console.WriteLine(CreaPalindromo(Input(), true));
                     Pausa();
                     break;
-                case 6:
-                    Console.Clear();
-                    //Console.WriteLine(CreaPalindromo(Input(), false));
-                    Pausa();
-                    break;
                 default:
                     Console.WriteLine("Opzione non valida.");
                     Pausa();
@@ -116,4 +92,14 @@ class Program {
         Console.Write("Inserire un numero: ");
         return Convert.ToString(Convert.ToInt32(Console.ReadLine()), 2);
     }
+
+    static void GruppiDiTre(string p_stringa) {
+        for (int i = 0; i < p_stringa.Length; i++) {
+            if (i % 3 == 0 && i != 0) {
+                Console.Write('-');
+            }
+            Console.Write(p_stringa[i]);
+        }
+        Console.WriteLine();
+    }
 }
\ No newline at end of file
diff --git a/bin/Debug/net9.0/strings_4.dll b/bin/Debug/net9.0/strings_4.dll
index 391d5a4..d8ee7d5 100644
Binary files a/bin/Debug/net9.0/strings_4.dll and b/bin/Debug/net9.0/strings_4.dll differ
diff --git a/bin/Debug/net9.0/strings_4.pdb b/bin/Debug/net9.0/strings_4.pdb
index cede4cb..0c2fc8f 100644
Binary files a/bin/Debug/net9.0/strings_4.pdb and b/bin/Debug/net9.0/strings_4.pdb differ
diff --git a/obj/Debug/net9.0/ref/strings_4.dll b/obj/Debug/net9.0/ref/strings_4.dll
index c6b8e8b..e040d4d 100644
Binary files a/obj/Debug/net9.0/ref/strings_4.dll and b/obj/Debug/net9.0/ref/strings_4.dll differ
diff --git a/obj/Debug/net9.0/refint/strings_4.dll b/obj/Debug/net9.0/refint/strings_4.dll
index c6b8e8b..e040d4d 100644
Binary files a/obj/Debug/net9.0/refint/strings_4.dll and b/obj/Debug/net9.0/refint/strings_4.dll differ
diff --git a/obj/Debug/net9.0/strings_4.AssemblyInfo.cs b/obj/Debug/net9.0/strings_4.AssemblyInfo.cs
index af9a0bd..847ff2b 100644
--- a/obj/Debug/net9.0/strings_4.AssemblyInfo.cs
+++ b/obj/Debug/net9.0/strings_4.AssemblyInfo.cs
@@ -13,7 +13,7 @@ using System.Reflection;
 [assembly: System.Reflection.AssemblyCompanyAttribute("strings_4")]
 [assembly: System.Reflection.AssemblyConfigurationAttribute("Debug")]
 [assembly: System.Reflection.AssemblyFileVersionAttribute("1.0.0.0")]
-[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0+cecacadf82f4550337db97f3140dafdfa966695d")]
+[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0+cce7ba546976b400f613cfa17cf408d3af20d0c1")]
 [assembly: System.Reflection.AssemblyProductAttribute("strings_4")]
 [assembly: System.Reflection.AssemblyTitleAttribute("strings_4")]
 [assembly: System.Reflection.AssemblyVersionAttribute("1.0.0.0")]
diff --git a/obj/Debug/net9.0/strings_4.AssemblyInfoInputs.cache b/obj/Debug/net9.0/strings_4.AssemblyInfoInputs.cache
index 519c80e..accc04d 100644
--- a/obj/Debug/net9.0/strings_4.AssemblyInfoInputs.cache
+++ b/obj/Debug/net9.0/strings_4.AssemblyInfoInputs.cache
@@ -1 +1 @@
-5243215eb45f40b218b4e71f61c91a255525290d9fa357e38b27a9c22cb475d7
+b0c34602d823055cddc7c771d50c3fe4da181b0e802d7ba1da76f4950a2766be
diff --git a/obj/Debug/net9.0/strings_4.dll b/obj/Debug/net9.0/strings_4.dll
index 391d5a4..d8ee7d5 100644
Binary files a/obj/Debug/net9.0/strings_4.dll and b/obj/Debug/net9.0/strings_4.dll differ
diff --git a/obj/Debug/net9.0/strings_4.pdb b/obj/Debug/net9.0/strings_4.pdb
index cede4cb..0c2fc8f 100644
Binary files a/obj/Debug/net9.0/strings_4.pdb and b/obj/Debug/net9.0/strings_4.pdb differ