diff --git a/linked_lists/remove_duplicates/remove_duplicates_solution.ipynb b/linked_lists/remove_duplicates/remove_duplicates_solution.ipynb
index 1e43301..77f598b 100644
--- a/linked_lists/remove_duplicates/remove_duplicates_solution.ipynb
+++ b/linked_lists/remove_duplicates/remove_duplicates_solution.ipynb
@@ -127,6 +127,20 @@
     "        if self.head is None:\n",
     "            return\n",
     "        node = self.head\n",
+    "        seen_data = set()\n",
+    "        while node is not None:\n",
+    "            if node.data not in seen_data:\n",
+    "                seen_data.add(node.data)\n",
+    "                prev = node\n",
+    "                node = node.next\n",
+    "            else:\n",
+    "                prev.next = node.next\n",
+    "                node = node.next\n",
+    "\n",
+    "    def remove_dupes_single_pointer(self):\n",
+    "        if self.head is None:\n",
+    "            return\n",
+    "        node = self.head\n",
     "        seen_data = set({node.data})\n",
     "        while node.next is not None:\n",
     "            if node.next.data in seen_data:\n",