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', 'd', 'b', '7507', 'x', 'L', 'g', 'x', '6539', 'H', 'R', '4761', '4121', '8219', '5091', '6999', '7939', 't', '1871', '6745', '2099', '4957', '3613']