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: ['233', '5879', 'f', '8935', '413', 'y', '8887']

233, 5879, 6, 8935, 413, 25, 8887