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: ['W', '7529', '8875', '7313', 'G', '3825', 'k', 'm', 'j', '2573', '8895', '9295', '8191', '6125', '9687', '5557', '313', '8991', '4917', 'O', '2563', 'D', '3773', '6563', 'y', '5621', 'n', '3449', 'v', 'y', 'm', 'q', 'g', '1257', '9555', '1655', '1283', 'C']

23, 7529, 8875, 7313, 7, 3825, 11, 13, 10, 2573, 8895, 9295, 8191, 6125, 9687, 5557, 313, 8991, 4917, 15, 2563, 4, 3773, 6563, 25, 5621, 14, 3449, 22, 25, 13, 17, 7, 1257, 9555, 1655, 1283, 3