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: ['7367', '3335', 'p', '4257', '5001', 'X', '9605', 'F', '127', '9303', '8159', 'm', 'n', 'N', 'p', 'a', 'X', 'P', '883', '2861', '2655', '9015']

7367, 3335, 16, 4257, 5001, 24, 9605, 6, 127, 9303, 8159, 13, 14, 14, 16, 1, 24, 16, 883, 2861, 2655, 9015