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: ['8795', 'M', 'x', '3269', 'V', '417', '6619', '7025', '6499', '6091', 'o', '7415', '9345', '4329', 'c', 'H']

8795, 13, 24, 3269, 22, 417, 6619, 7025, 6499, 6091, 15, 7415, 9345, 4329, 3, 8