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', 'w', '5423', 'D', 'T', '4819', '4365', '3689', 't', '8079', '5129', 'm']

23, 23, 5423, 4, 20, 4819, 4365, 3689, 20, 8079, 5129, 13