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: ['F', 'g', '2299', 'H', '3537', '1119', '6189', '2921', '7999', 'b', 'f', 'p', '4095', 'g', '7883', '2065', 'O', 'M', '3983', '7833', '131', 'x', '519', 'J', '4439', 'B', '6329', '2485', 'D', '3893', 'V']

6, 7, 2299, 8, 3537, 1119, 6189, 2921, 7999, 2, 6, 16, 4095, 7, 7883, 2065, 15, 13, 3983, 7833, 131, 24, 519, 10, 4439, 2, 6329, 2485, 4, 3893, 22