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: ['w', '4887', '7619', 'f', 'L', '2365', '1883', 'i', 'L', '1041', '7863', 'k', '1113', 'h', 'J', 'z', '6065', '2307']

23, 4887, 7619, 6, 12, 2365, 1883, 9, 12, 1041, 7863, 11, 1113, 8, 10, 26, 6065, 2307