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: ['z', 'a', '9185', '1913', '7765', 'S', 'i', '9707', '6077', 'N', '811', 'J', 'o', '3633', '3583', '2213', '6101', '9615', 'a', 'Y', 'b', 'N', '7863', '9225', 'E', '5569', 'l', 'g', '2113', 'p', 's', 'U', 'j', '2809', '3063', '9043', 'g', 'J', 'h', 'y']

26, 1, 9185, 1913, 7765, 19, 9, 9707, 6077, 14, 811, 10, 15, 3633, 3583, 2213, 6101, 9615, 1, 25, 2, 14, 7863, 9225, 5, 5569, 12, 7, 2113, 16, 19, 21, 10, 2809, 3063, 9043, 7, 10, 8, 25