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
['7299', 'd', 'D', '5413', '4373', '6737', 'z', 'l', '8157', 'T', '3247', 'c', '7811', '1523', '2873']