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', 'H', 'a', '953', '5527', 'L', 'O', 'd', 'g', '661', 'G', '6255', '9037', '9327', 'I', 'q', 'G', '575', '4059', 'x', '7787', '6151', '7227', 'L']

19, 8, 1, 953, 5527, 12, 15, 4, 7, 661, 7, 6255, 9037, 9327, 9, 17, 7, 575, 4059, 24, 7787, 6151, 7227, 12