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
['U', 'o', 'U', 'L', '4281', '1955', '2077', '9107', '4627', 'I', '3561', '9799', 'z', '7993', 'P', '9603', '3307', 'b', 'U', 'a', 'R', 'w']