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
['5821', '9559', 'a', '9681', '1937', 'U', '5721', '5307', 'S', 'b', '2719', '7577', 'A', '6345', '2903', 't', '81', '8679', 'o', '2577']