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
['z', 'Z', 'Q', 'f', '7157', '8475', '4475', '1705', 'M', '7891', 'y', 's', '5049', '6741', 'Q', '5839', 'x', 'v', '6937', 'o', '7809', 'f']