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: ['N', 'C', 'T', 'H', 'O', '213', 'w', '1889', '8137', 'R', 'q', 'z', 'y']

14, 3, 20, 8, 15, 213, 23, 1889, 8137, 18, 17, 26, 25