diff --git a/VolkovVA/cod.py b/VolkovVA/cod.py
index eb77941..1bdb743 100644
--- a/VolkovVA/cod.py
+++ b/VolkovVA/cod.py
@@ -12,45 +12,51 @@ def ll_insert(head, name, phone):
         if current['name'] == name:
             current['phone'] = phone
             return head
+        if current['next'] is None:
+            break
         current = current['next']
-       
         
-    new_node['next'] = head
-    return new_node
+    current['next'] = new_node
+    return head
 
 def ll_find(head, name):
     current = head
     while current is not None:
-        if current['name']==name:
+        if current['name'] == name:
             return current['phone']
-        current=current['next']
-        return None
-    
-    
+        current = current['next']
+    return None
+
+
 def ll_delete(head, name):
     if head is None:
         return None
-    if head['name']==name:
+    if head['name'] == name:
         return head['next']
     
-    current = head 
+    current = head
     while current['next'] is not None:
         if current['next']['name'] == name:
-            current['next']==current['next']['next']
+            current['next'] = current['next']['next']
             return head
-   
-        
-def ll_list_all(head):
-    record=[]
-    current=head
-    while current is not None:
-        record.append(current['name'], current['phone'])
-        current=current['next']
-    record.sort(key=lambda x: x[0])
-    return record
+        current = current['next']
+    return head
 
-    
-            
-    
-        
-    
+
+def sort_records(lst):
+    n = len(lst)
+    for i in range(n):
+        for j in range(0, n-i-1):
+            if lst[j][0] > lst[j + 1][0]:
+                lst[j], lst[j + 1] = lst[j + 1], lst[j]
+    return lst
+
+
+def ll_list_all(head):
+    record = []
+    current = head
+    while current is not None:
+        record += [(current['name'], current['phone'])]
+        current = current['next']
+    res = sort_records(record)
+    return res
\ No newline at end of file