Definition: In this task, you are given an input list A. You need to convert all the alphabets in the list with a number representing their position in the English alphabet. E.g., replace A by 1, B by 2, a by 1, b by 2, and so on.
Input: ['3393', '483', '8885', '6559', '303', '4709', '7765', '859', '4003', '8331', 'e', 'M', 'v', 'U', 'E', 'z', 'o', '4651', 'S', '4875', 'r', 'B', 'R', '1009', '5213', '257', 'C', 'c', 'V']

3393, 483, 8885, 6559, 303, 4709, 7765, 859, 4003, 8331, 5, 13, 22, 21, 5, 26, 15, 4651, 19, 4875, 18, 2, 18, 1009, 5213, 257, 3, 3, 22