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: ['g', '9953', '1787', 'k', 'w', 'o', '465', 'd', '5447', 'o', 'M', 'h', '3121', 'c', 'P', '8101']

7, 9953, 1787, 11, 23, 15, 465, 4, 5447, 15, 13, 8, 3121, 3, 16, 8101