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
['4763', 'D', 'O', '6999', '4153', '7571', 'f', 'W', 'I', '9983', '2799', 'z', 'D', '1357', 's', '3189', '7857']