How to make snake body from 3 parts? [snake game]

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1

How to make snake body from 3 parts? [snake game]
Now it have 2 parts, head and body. Head is one texture body is other texture (prefab). But i want create snake from 3 parts. Head, body (which will be longer after eating a food) and snake end which will be always the same. How to create a script for that?
There is snake script how looks like at now:

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

public class Snake : MonoBehaviour {

	// Did the snake eat smthg?
	bool ate = false;
	// Tail Prefab
	public GameObject tailPrefab;

	//Current Movement Directions (by default it moves to the right)
	Vector2 dir = Vector2.right;

	// Use this for initialization
	void Start () {
		//Move the Snake every 300ms
		InvokeRepeating ("Move", 0.3f, 0.3f);
	}
	
	// Update is called once per frame
	void Update () {
		// Move in a new directions
		if (Input.GetKey (KeyCode.RightArrow))
			dir = Vector2.right;
		else if (Input.GetKey (KeyCode.DownArrow))
			dir = -Vector2.up; //down becouse of -Vector
		else if (Input.GetKey (KeyCode.LeftArrow))
			dir = -Vector2.right; //left becouse of -Vector
		else if (Input.GetKey (KeyCode.UpArrow))
			dir = Vector2.up;
	}

	void Move(){
		// Save current position (gap will be here)
		Vector2 v = transform.position;
		// Move head into new directions (now there is a gap)
		transform.Translate (dir);
		// Ate smthg? Then insert new Element in to gap
		if (ate) {
			// Load Prefab in to the world
			GameObject g = (GameObject)Instantiate (tailPrefab, v, Quaternion.identity);
			// Keep track of it in our tail list
			tail.Insert(0, g.transform);
			// Reset the flag
			ate = false;
		}
		// Do we have a Tail?
		if (tail.Count > 0) {
			// Move last Tail element to where the Head was
			tail.Last().position = v;
			// Add to front of list, remove from the back
			tail.Insert(0, tail.Last());
			tail.RemoveAt(tail.Count-1);
		}
	}

	// Keep track of Tail
	List<Transform> tail = new List<Transform>();

	void OnTriggerEnter2D(Collider2D coll){
		// Food?
		if (coll.name.StartsWith ("FoodPrefab")) {
			// Get longer in next Move call
			ate = true;
			// Remove the food
			Destroy (coll.gameObject);
		}
		// Collided with Tail or Border
		else {
			// ToDo "you lose" screen
		}
	}



}

Thanks for answers!

2

anyone? please