diff --git a/objc-interpolate/FISAppDelegate.m b/objc-interpolate/FISAppDelegate.m
index ead0fcb..2066753 100644
--- a/objc-interpolate/FISAppDelegate.m
+++ b/objc-interpolate/FISAppDelegate.m
@@ -13,6 +13,40 @@ - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(
      
      */
     
+    // A. DALEK //
+    NSLog(@"Dalek");
+    // String Interpolation
+    NSLog(@"%@", @"Dalek");
+    // String Interpolation via a Format string with five adjacent format specifiers
+    NSLog(@"%@%@%@%@%@", @"D", @"a", @"l", @"e", @"k");
+    
+    // B. Interpolate //
+    // Print a string that says Interpolate!
+    NSLog(@"Interpolate!");
+    // Now, change the format string to a string literal containing only a single
+    // format specifier (%@) and use the "Interpolate!" string as the format argument
+    NSLog(@"%@", @"Interpolate!");
+    // Format string that contain two format specifiers separated by a space
+    NSLog(@"%@ %@", @"Interpolate!", @"Interpolate!");
+    // Format string that contain four format specifiers ending with an exclamation point (!)
+    NSLog(@"%@%@%@%@!", @"In", @"ter", @"po", @"late");
+    // Format string that contain four format specifiers ending with an exclamation point (!)
+    // but that separates each syllable with a dash (-)
+    NSLog(@"%@-%@-%@-%@!", @"In", @"ter", @"po", @"late");
+    
+    // C. "You are not The Doctor!"
+    // print a string
+    NSLog(@"You are not The Doctor!");
+    // use a single format specifier (%@) in the format string to interpolate the string
+    NSLog(@"%@", @"You are not The Doctor!");
+    // Separates each word into a single string that gets interpolated into the
+    // format string as the list of format arguments
+    NSLog(@"%@%@%@%@%@%@", @"You", @"are", @"not", @"the", @"Doctor", @"!");
+    // Now, add spaces except for the exclamation mark at the end
+    NSLog(@"%@ %@ %@ %@ %@%@", @"You", @"are", @"not", @"the", @"Doctor", @"!");
+    // Mix and match
+    NSLog(@"You are %@ %@!", @"not", @"The Doctor");
+    
     // Do not alter
     return YES;  //
     ///////////////