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: ['1797', '5333', 'm', '5099', 'H', '5221', '6817', 'B', 'Z', 'o', 'i', 'g', 'P', '333', '7559', '6445', 'e', 'V', '4021', '6873', 'C', '9865', 'U', 'R', 'w', '4807', 's']

1797, 5333, 13, 5099, 8, 5221, 6817, 2, 26, 15, 9, 7, 16, 333, 7559, 6445, 5, 22, 4021, 6873, 3, 9865, 21, 18, 23, 4807, 19