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: ['7395', '1273', 'd', '4557', '5865', 'X', 'n', '3477', '233', 'v', 'b', 'S', 'j', '727', 'S', 'R', 't', 'c', '2293', '3233', 'L', '8737', '2539', '6555', 'q', '6653', 'i', 'O', '7743', '339', '265', '8157', 'i', '8245', 'L']

7395, 1273, 4, 4557, 5865, 24, 14, 3477, 233, 22, 2, 19, 10, 727, 19, 18, 20, 3, 2293, 3233, 12, 8737, 2539, 6555, 17, 6653, 9, 15, 7743, 339, 265, 8157, 9, 8245, 12