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
['G', 'E', 'm', '5391', 'S', 'c', '6981', '9401', 'i', 'k', 'R', '3683', 'u', 'z', 'G', '129', '2499', 'F', 'o', 'g', '795', '2729', 'R', 'U']