diff --git a/2021/14/14.csproj b/2021/14/14.csproj
index d75796d..e758283 100644
--- a/2021/14/14.csproj
+++ b/2021/14/14.csproj
@@ -14,4 +14,11 @@
     </None>
   </ItemGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Creek.HelpfulExtensions" Version="1.4.3" />
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="6.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Logging" Version="6.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Logging.Console" Version="6.0.0" />
+  </ItemGroup>
+
 </Project>
diff --git a/2021/14/Program.cs b/2021/14/Program.cs
index 2da7c65..8e1a898 100644
--- a/2021/14/Program.cs
+++ b/2021/14/Program.cs
@@ -1,4 +1,6 @@
-using System.Diagnostics;
+using Creek.HelpfulExtensions;
+using Microsoft.Extensions.Logging;
+using System.Diagnostics;
 
 namespace Day14
 {
@@ -135,20 +137,20 @@ namespace Day14
             for (int i = 0; i < temporaryTemplate.Count() - 1; i++)
             {
                 char insertValue;
+                
+                //using ("First".DisposableStopWatch())
+                //{
                 rules.TryGetValue((temporaryTemplate[i], temporaryTemplate[i + 1]), out insertValue);
+                //}
 
-                if (char.IsLetter(insertValue))
-                {
-                    temporaryList.AddAfter(pointer, insertValue);
+                temporaryList.AddAfter(pointer, insertValue);
 
-                    // Move on an extra position as we have added a node
-                    pointer = pointer.Next;
-                }
-
-                pointer = pointer.Next;
+                // Move on an extra position as we have added a node
+                pointer = pointer.Next.Next;
             }
 
             polymerTemplate = String.Join("", temporaryList);
+            //polymerTemplate = string.Concat(temporaryList); // this is slower
         }
 
         static void CompleteStep(ref string polymerTemplate, ref string[] lines, List<Rule> rules)