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: ['5299', 'N', 'J', 'J', 'x', 'g', '6675', '5483', 'D', '7915', '3995', 't', 'q', 'e', '969', 'W', 'L', '3967', '7465', '7223', 'l', '7637', '1061', 'H', '5051', 'A', 'I', '9425']

5299, 14, 10, 10, 24, 7, 6675, 5483, 4, 7915, 3995, 20, 17, 5, 969, 23, 12, 3967, 7465, 7223, 12, 7637, 1061, 8, 5051, 1, 9, 9425