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: ['7233', 'X', '6735', 'u', '2671', 'y', '7431', 'A', '3761', '4897', 'm', 'p', '513', '1505', 'e', '2555']

7233, 24, 6735, 21, 2671, 25, 7431, 1, 3761, 4897, 13, 16, 513, 1505, 5, 2555