diff --git a/curriculum/challenges/english/blocks/data-structures/587d825a367417b2b2512c87.md b/curriculum/challenges/english/blocks/data-structures/587d825a367417b2b2512c87.md
index c08c9b77154..5131d76bd43 100644
--- a/curriculum/challenges/english/blocks/data-structures/587d825a367417b2b2512c87.md
+++ b/curriculum/challenges/english/blocks/data-structures/587d825a367417b2b2512c87.md
@@ -94,7 +94,13 @@ assert(
     test.add(5);
     test.add(6);
     test.add(723);
-    return test.print().join('') == '56723';
+    var result = [];
+    var curr = test.head;
+    while (curr) {
+      result.push(curr.data);
+      curr = curr.next;
+    }
+    return result.join('') == '56723';
   })()
 );
 ```
@@ -111,7 +117,13 @@ assert(
     test.add(50);
     test.add(68);
     test.add(73);
-    return test.printReverse().join('') == '736850';
+    var result = [];
+    var curr = test.tail;
+    while (curr) {
+      result.push(curr.data);
+      curr = curr.prev;
+    }
+    return result.join('') == '736850';
   })()
 );
 ```
@@ -129,7 +141,13 @@ assert(
     test.add(35);
     test.add(60);
     test.remove(25);
-    return test.print().join('') == '3560';
+    var result = [];
+    var curr = test.head;
+    while (curr) {
+      result.push(curr.data);
+      curr = curr.next;
+    }
+    return result.join('') == '3560';
   })()
 );
 ```
@@ -147,48 +165,17 @@ assert(
     test.add(35);
     test.add(60);
     test.remove(60);
-    return test.print().join('') == '2535';
+    var result = [];
+    var curr = test.head;
+    while (curr) {
+      result.push(curr.data);
+      curr = curr.next;
+    }
+    return result.join('') == '2535';
   })()
 );
 ```
 
-# --before-each--
-
-```js
-DoublyLinkedList.prototype = Object.assign(
-  DoublyLinkedList.prototype,
-  {
-  
-  print() {
-    if (this.head == null) {
-      return null;
-    } else {
-      var result = new Array();
-      var node = this.head;
-      while (node.next != null) {
-        result.push(node.data);
-        node = node.next;
-      };
-      result.push(node.data);
-      return result;
-    };
-  },
-  printReverse() {
-    if (this.tail == null) {
-      return null;
-    } else {
-      var result = new Array();
-      var node = this.tail;
-      while (node.prev != null) {
-        result.push(node.data);
-        node = node.prev;
-      };
-      result.push(node.data);
-      return result;
-    };
-  }
-});
-```
 
 # --seed--