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: ['S', 'e', '7525', '8065', 'I', 'e', '2725', 'J', '6039', 'S', 'x', 'O', 'r', 'H', 'h', '4737', '5885', '3581', 'G', '3437', '5719', '6101', 't', 'V', '813', '993', '8949', 'I', 'o', 'X', '4469', 'd', '8567', '1563', 'c', 'v', 't', '7453']

19, 5, 7525, 8065, 9, 5, 2725, 10, 6039, 19, 24, 15, 18, 8, 8, 4737, 5885, 3581, 7, 3437, 5719, 6101, 20, 22, 813, 993, 8949, 9, 15, 24, 4469, 4, 8567, 1563, 3, 22, 20, 7453