In this task, you are given an input list. A list contains several comma-separated items written within brackets. You need to return the count of all the alphabetical elements in the given list. Return 0 if no alphabetical element in the list
['6863', '7077', 'H', 'Q', 'M', 'P', '9683', '8879', 'z', '4931', '9239', '7025', 'a', '6687', '5289', 'm', '8493', '9411', 'W', '2973']