EndLess 2D Game

I have created a game and I have a list of objects with the following locations

When one object is destroyed (the location of this object is empty) I want to move the object behind replacing the position of the object is destroyed

You can help me solve this problem?

(I really want to express in pictures but I can not upload images on this website is Sorry for the inconvenience)

My code:

using UnityEngine; using System.Collections; using System.Collections.Generic;

public class GameManager : MonoBehaviour { public static GameManager current; public GameObject pooledObject;

 public int pooledAmount;

 public List<GameObject> pooledObjects;
 public List<Transform> transformPlayer;
 public Transform[] transFormObject = new Transform[12];
 void Awake ()
 {
     current = this;
     Physics2D.IgnoreLayerCollision (9, 9);
 }

 // Use this for initialization
 void Start ()
 {
     pooledObjects = new List<GameObject> ();
     transformPlayer = new List<Transform> ();
     GameObject obj = new GameObject ();
     int j = new int ();
     for (int i = 0; i< pooledAmount; i++) {
         obj = (GameObject)Instantiate (pooledObject);
     
         if (j < transFormObject.Length) {
             obj.transform.position = transFormObject [j].position;    
             transformPlayer.Add (obj.transform);
             obj.name = "P" + i;
             obj.SetActive (true);
             pooledObjects.Add (obj);
             obj.GetComponent<FollowTarget> ().time = i * 0.01f;
             j++;
             pooledObjects [0].name = "P0";
             if (i >= 1) {
                 obj.GetComponent<FollowTarget> ().targetName = pooledObjects [i - 1].name;
             
             }

         }
     }

 }
 // Update is called once per frame
 void Update ()
 {
     for (int i = 0; i<pooledObjects.Count; i++) {
         pooledObjects [i].name = "P" + i;

         for (int j = 0; j<transformPlayer.Count; j++) {
             pooledObjects [i].transform.position = transformPlayer [j].position;
         }
     }
 }

}