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: ['w', 'z', 'j', '931', '6003', '5531', '4625', 'i', 'f', '9843', 'G', 'B', 'F', 'I', 'N', '3749', '525', 'j', 'n', '4947', 'P', '5509', '6291']

23, 26, 10, 931, 6003, 5531, 4625, 9, 6, 9843, 7, 2, 6, 9, 14, 3749, 525, 10, 14, 4947, 16, 5509, 6291