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: ['A', 'l', 'u', 'Q', '9125', 'x', 'Q', '6241', 'e']

1, 12, 21, 17, 9125, 24, 17, 6241, 5