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: ['7245', '2607', '3097', '6249', '4091', '5261', '7545', '4739', 'E', '6215', 'r', 'P', '323', 'l', '5033', '3185', '1967', 'W', '3871', '8007', '9885', '2541', '209', 't', 'r', '5131', 'm', '3429', 'd', 'Y', '9325', 'P', 'h', '4901', 'D', '9355']

7245, 2607, 3097, 6249, 4091, 5261, 7545, 4739, 5, 6215, 18, 16, 323, 12, 5033, 3185, 1967, 23, 3871, 8007, 9885, 2541, 209, 20, 18, 5131, 13, 3429, 4, 25, 9325, 16, 8, 4901, 4, 9355