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
['7805', '9139', 'l', '1021', '8457', '3749', 'H', 'L', '9771', 'k', '5137', '8431', '5457', 'j', '2599', 'n', '1005', 'o']