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
['c', 'O', '639', 'v', 'b', '8273', 'k', 'r', 'H', 'S', '1741', 'n', '555', '1429', 'w', 'o', '9743', '6471', 'd']