diff --git a/KuzminskiyAA/Task 1/Dogs/Data/1.py b/KuzminskiyAA/Task 1/Dogs/Data/1.py
index a4bd2d2..0007616 100644
--- a/KuzminskiyAA/Task 1/Dogs/Data/1.py	
+++ b/KuzminskiyAA/Task 1/Dogs/Data/1.py	
@@ -72,4 +72,55 @@ def ht_list_all(table):
         while current:
             records.append((current['name'], current['phone']))
             current = current['next']
-    return sorted(records, key=lambda x: x[0])
\ No newline at end of file
+    return sorted(records, key=lambda x: x[0])
+def bst_insert(root, name, phone):
+    if root is None:
+        return {'name': name, 'phone': phone, 'left': None, 'right': None}
+    if name < root['name']:
+        root['left'] = bst_insert(root['left'], name, phone)
+    elif name > root['name']:
+        root['right'] = bst_insert(root['right'], name, phone)
+    else:
+        root['phone'] = phone
+    return root
+
+def bst_find(root, name):
+    if root is None:
+        return None
+    if name == root['name']:
+        return root['phone']
+    elif name < root['name']:
+        return bst_find(root['left'], name)
+    else:
+        return bst_find(root['right'], name)
+
+def bst_min(node):
+    while node and node['left']:
+        node = node['left']
+    return node
+
+def bst_delete(root, name):
+    if root is None:
+        return None
+    if name < root['name']:
+        root['left'] = bst_delete(root['left'], name)
+    elif name > root['name']:
+        root['right'] = bst_delete(root['right'], name)
+    else:
+        if root['left'] is None:
+            return root['right']
+        if root['right'] is None:
+            return root['left']
+        min_node = bst_min(root['right'])
+        root['name'] = min_node['name']
+        root['phone'] = min_node['phone']
+        root['right'] = bst_delete(root['right'], min_node['name'])
+    return root
+
+def bst_list_all(root):
+    records = []
+    if root:
+        records.extend(bst_list_all(root['left']))
+        records.append((root['name'], root['phone']))
+        records.extend(bst_list_all(root['right']))
+    return records
\ No newline at end of file