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: ['5529', 'k', '5891', 'a', '3355', 'e', 'G', 'H', '5241', 'R', '5687', 'a', '7941', 'z', '7689', 'Z', '8437', '7931', '6675', 'N', 'Y', '9447', 'W', '5779', '537', 'j', 'Z', 'I', '8915', 'W', 'i', 'D']

5529, 11, 5891, 1, 3355, 5, 7, 8, 5241, 18, 5687, 1, 7941, 26, 7689, 26, 8437, 7931, 6675, 14, 25, 9447, 23, 5779, 537, 10, 26, 9, 8915, 23, 9, 4