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
['w', '7063', 'r', 'Z', 'm', '7515', '1427', '6507', '989', '689', 'R', '8303', 'd', '2787', '2223', 'C', '8629', '6891', 'z', 'M']