GraphicForLetters.cs

using UnityEngine;
using UnityEngine.EventSystems;

public class GraphicForLetters : MonoBehaviour, IPointerClickHandler, IPointerDownHandler, IPointerUpHandler {

	void Awake () {
		SpriteRenderer spriteRenderer = GetComponent<SpriteRenderer>();
		spriteRenderer.sortingOrder = 3;
	}

	public void OnPointerDown(PointerEventData eventData) {
		Debug.Log(eventData.pointerPress.name);
	}

	public void OnPointerUp(PointerEventData eventData) {
		Debug.Log(eventData.pointerPress.name);
		Debug.Log(".....");
	}

	public void OnPointerClick(PointerEventData eventData) {
		Debug.Log("hhhh");
	}
}