diff --git a/src/main/java/com/booleanuk/core/Exercise.java b/src/main/java/com/booleanuk/core/Exercise.java
index e1485c3..66124a8 100644
--- a/src/main/java/com/booleanuk/core/Exercise.java
+++ b/src/main/java/com/booleanuk/core/Exercise.java
@@ -48,6 +48,10 @@ public HashMap<String, String> createPerson() {
          in the createPerson method
      */
 
+    public String getValue(String key){
+        return createPerson().get(key);
+    }
+
 
 
     /*
@@ -58,6 +62,9 @@ public HashMap<String, String> createPerson() {
          in the provided HashMap
      */
 
+    public boolean hasKey(HashMap<String, String> map, String str){
+        return map.containsKey(str);
+    }
 
 
     /*
@@ -68,7 +75,9 @@ public HashMap<String, String> createPerson() {
          or -1 if the string provided is not a key in the HashMap
      */
 
-
+    public int getValueOrDefault(HashMap<String, Integer> map, String str){
+        return map.getOrDefault(str, -1);
+    }
 
     /*
         TODO: 4. Complete the method below
@@ -90,12 +99,29 @@ public ArrayList<String> buildSecretPhrase(ArrayList<Integer> numbers) {
         map.put(96, "nice");
         // Write your code below this comment...
 
-
-
+        ArrayList<String> ans = new ArrayList<>();
+        for (int x : numbers){
+            if (map.containsKey(x)){
+                ans.add(map.get(x));
+            }
+        }
 
         // ...and above this comment
 
         // Change the return statement below to return your actual ArrayList
-        return new ArrayList<String>();
+        return ans;
     }
 }
+
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