diff --git a/Makefile b/Makefile
index 4c5ec43..d99b87a 100644
--- a/Makefile
+++ b/Makefile
@@ -6,7 +6,7 @@
 #    By: vflorez <vflorez@student.42.fr>            +#+  +:+       +#+         #
 #                                                 +#+#+#+#+#+   +#+            #
 #    Created: 2023/10/02 17:28:00 by vflorez           #+#    #+#              #
-#    Updated: 2023/12/18 17:26:55 by vflorez          ###   ########.fr        #
+#    Updated: 2023/12/19 12:47:55 by vflorez          ###   ########.fr        #
 #                                                                              #
 # **************************************************************************** #
 
@@ -29,7 +29,7 @@ SRC_FILES = src/swap_actions.c\
 			src/reverse_rot_actions.c\
 			src/stack_utils.c\
 			src/main.c\
-			src/error.c\
+			src/free.c\
 			src/sort_3.c\
 			src/handle_args.c
 	
diff --git a/includes/push_swap.h b/includes/push_swap.h
index e52fd37..70c28d4 100644
--- a/includes/push_swap.h
+++ b/includes/push_swap.h
@@ -6,7 +6,7 @@
 /*   By: vflorez <vflorez@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2023/10/04 16:14:44 by vflorez           #+#    #+#             */
-/*   Updated: 2023/12/18 19:12:24 by vflorez          ###   ########.fr       */
+/*   Updated: 2023/12/19 17:33:03 by vflorez          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -38,12 +38,13 @@ void	ft_free(t_stack_node *stack);
 /*Stacks Utils*/
 int		stack_size(t_stack_node *stack);
 void	*add_node_end(t_stack_node **stack, t_stack_node *newnode);
-void	printStack(const char *name, t_stack_node* stack); 
+void	printStack(const char *name, t_stack_node* stack);
 void	add_data(t_stack_node **stack, int data);
 void	ft_stack_organized(t_stack_node *stack);
+void	ft_node_index(t_stack_node	**stack_a, int data);
 
 
-/*Actions allowed*/
+/*Actions allowed*/	
 void	ft_sa(t_stack_node **stack_a);
 void	ft_sb(t_stack_node **stack_b);
 void	ft_ss(t_stack_node **stack_a, t_stack_node **stack_b);
diff --git a/src/error.c b/src/free.c
similarity index 100%
rename from src/error.c
rename to src/free.c
diff --git a/src/main.c b/src/main.c
index e0a782c..cbb2758 100644
--- a/src/main.c
+++ b/src/main.c
@@ -6,7 +6,7 @@
 /*   By: vflorez <vflorez@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2023/11/27 20:06:07 by vflorez           #+#    #+#             */
-/*   Updated: 2023/12/18 17:37:40 by vflorez          ###   ########.fr       */
+/*   Updated: 2023/12/19 17:49:33 by vflorez          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -76,7 +76,7 @@ int main(int argc, char *argv[])
 	while (i < argc)
 	{
 		int value = ft_atoi(argv[i]);
-		add_data(&stack_a, value);
+		ft_node_index(&stack_a, value);
 		if(!check_limits(&stack_a) || !check_duplicate(&stack_a) || !check_str(argv[i]))
 		{
 			ft_printf("invalid input");
@@ -88,7 +88,7 @@ int main(int argc, char *argv[])
 
 	printStack("Inicial A", stack_a);
 
-	ft_stack_organized(stack_a);
+	ft_sort_3(&stack_a);
 
 	printStack("Final A", stack_a);
 	ft_free(stack_a);
diff --git a/src/stack_utils.c b/src/stack_utils.c
index e615c58..239a181 100644
--- a/src/stack_utils.c
+++ b/src/stack_utils.c
@@ -6,7 +6,7 @@
 /*   By: vflorez <vflorez@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2023/12/14 08:12:33 by vradis            #+#    #+#             */
-/*   Updated: 2023/12/18 17:38:04 by vflorez          ###   ########.fr       */
+/*   Updated: 2023/12/19 17:47:59 by vflorez          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -62,13 +62,13 @@ void	printStack(const char *name, t_stack_node* stack)
 {
 	ft_printf("Stack %s: ", name);
     while (stack != NULL) {
-        ft_printf("%d -> ", stack->data);
+        ft_printf("data: %d\n -> ", stack->data);
+		ft_printf("index : %d\n -> ", stack->index);
         stack = stack->next;
     }
     ft_printf("NULL\n");
 }
 
-/*Functions to add argv to stacks*/
 void	add_data(t_stack_node **stack, int data)
 {
 	t_stack_node	*newnode;
@@ -78,6 +78,55 @@ void	add_data(t_stack_node **stack, int data)
 	*stack = newnode;
 }
 
+/*Function creates a new node to add in stack and 
+initialize the alias index in 1 */
+static t_stack_node	*add_newnode(t_stack_node *stack_a, int data)
+{
+	t_stack_node	*newnode;
+	newnode = malloc(sizeof(t_stack_node));
+	if (newnode == NULL)
+	{
+		ft_free(stack_a);
+		ft_printf("Error\n");
+	}
+	newnode->data = data;
+	newnode->index = 1;
+	newnode->next = NULL;
+	return (newnode);
+}
+
+/*Functions:
+1. Create a newnode
+2. Create the alias index in each node or data and it will help
+to organize the stack */
+
+void ft_node_index(t_stack_node	**stack_a, int data)
+{
+	t_stack_node	*newnode;
+	t_stack_node	*ptr;
+
+	newnode = add_newnode(*stack_a, data);
+	if(*stack_a == NULL)
+		*stack_a = newnode;
+	else
+	{
+		ptr = *stack_a;
+		if(ptr->data > newnode->data)
+			ptr->index++;
+		else
+			newnode->index++;
+		while(ptr->next != NULL)
+		{
+			ptr = ptr->next;
+			if(ptr->data > newnode->data)
+				ptr->index++;
+			else
+				newnode->index++;
+		}
+		ptr->next = newnode;
+	}
+}
+
 
 /*Function that checks if the numbers in the stack are organized
 from smallest to largest
@@ -92,8 +141,9 @@ void	ft_stack_organized(t_stack_node *stack)
 	while(ptr != NULL)
 	{
 		if(ptr->next != NULL && ptr->index > ptr->next->index)
-				ft_printf("stack is not organized\n");
-			ptr = ptr->next;
+			ft_printf("stack is not organized\n");
+		ptr = ptr->next;
 	}
 	ft_printf("stack is organized\n");
-}
\ No newline at end of file
+}
+