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: ['1753', 'b', 'J', 'p', '5745', 'Q', 'U', 'R', 'l', 'k', 'F', '9595', '5995', '1125', 'm', 'k', '7677', '2421', 'r', '2921', '6731', 'a', 'V', '459', 'p', '8935', '9473', 'n', 'E', 'M', '7983', 'w', '4885', '3085', '9537', '5999', 'd', 'e']

1753, 2, 10, 16, 5745, 17, 21, 18, 12, 11, 6, 9595, 5995, 1125, 13, 11, 7677, 2421, 18, 2921, 6731, 1, 22, 459, 16, 8935, 9473, 14, 5, 13, 7983, 23, 4885, 3085, 9537, 5999, 4, 5