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: ['5255', 'h', 'j', 'z', '5995', '6609', '9295', '1631', 'T', '7127', '8415', '9183', '8259', '2899', 'C', 's', 'G', 'F', 'g', 'g', '9787', 'h', 'P', '6109', 'I', '8343', 'E', '9975', 'O', '7483', '3589', '2333', 'M', '4905', 'K', 'q', 'J', '4147', '75', 'Q']

5255, 8, 10, 26, 5995, 6609, 9295, 1631, 20, 7127, 8415, 9183, 8259, 2899, 3, 19, 7, 6, 7, 7, 9787, 8, 16, 6109, 9, 8343, 5, 9975, 15, 7483, 3589, 2333, 13, 4905, 11, 17, 10, 4147, 75, 17