diff --git a/include/blt/std/allocator.h b/include/blt/std/allocator.h
index 655ca32..17745b7 100644
--- a/include/blt/std/allocator.h
+++ b/include/blt/std/allocator.h
@@ -178,6 +178,20 @@ namespace blt
                 allocate_block();
             }
             
+            area_allocator(const area_allocator& copy) = delete;
+            
+            area_allocator(area_allocator&& move)
+            {
+                blocks = move.blocks;
+            }
+            
+            area_allocator& operator=(const area_allocator& copy) = delete;
+            
+            area_allocator& operator=(area_allocator&& move)
+            {
+                std::swap(move.blocks, blocks);
+            }
+            
             [[nodiscard]] pointer allocate(size_t n)
             {
                 if (n > BLOCK_SIZE)
diff --git a/include/blt/std/binary_tree.h b/include/blt/std/binary_tree.h
index 3d09e83..446b5bb 100755
--- a/include/blt/std/binary_tree.h
+++ b/include/blt/std/binary_tree.h
@@ -6,21 +6,41 @@
 
 #include <stdexcept>
 #include <vector>
-#include <blt/std/queue.h>
+#include <blt/std/allocator.h>
 #include <iostream>
 #include <memory>
 
 #ifndef BLT_BINARY_TREE_H
 #define BLT_BINARY_TREE_H
 
-namespace blt {
+namespace blt
+{
     
-    class binary_search_tree_error : public std::runtime_error {
+    class binary_search_tree_error : public std::runtime_error
+    {
         public:
-            explicit binary_search_tree_error(const std::string& string): runtime_error(string) {}
+            explicit binary_search_tree_error(const std::string& string): runtime_error(string)
+            {}
     };
     
-    
+    template<typename T, typename alloc = blt::area_allocator<T>>
+    class AVL_node_tree
+    {
+        private:
+            struct node
+            {
+                node* left, right;
+                T val;
+            };
+            node* root = nullptr;
+        public:
+            AVL_node_tree() = default;
+            
+            ~AVL_node_tree()
+            {
+            
+            }
+    };
     
 }