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: ['y', 'x', '5883', 'o', 'e', 'n', 'K']

25, 24, 5883, 15, 5, 14, 11