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: ['2517', 'k', '9163', '1051', 'o', 'j', '755', 'N', '5879', 'Z', '2481', 'F', '7037', 'u', '7955', 'F', '4049', '1649', 'e', '8401', 'I', '7521', '7393', '3911', '8253', 'K', 'E', 'd', '8439', '5891', 'q', '153', '8879', 'K', '3617', '9931', 'e', '1107', 'J']

2517, 11, 9163, 1051, 15, 10, 755, 14, 5879, 26, 2481, 6, 7037, 21, 7955, 6, 4049, 1649, 5, 8401, 9, 7521, 7393, 3911, 8253, 11, 5, 4, 8439, 5891, 17, 153, 8879, 11, 3617, 9931, 5, 1107, 10