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
['4307', 'k', 'G', 'Y', '6309', '791', '8221', 'b', 'z', 'w', '1863', '8461', 'B', '9813', 'B', 'B', '1571', '3121', 'r', 'k']