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: ['1561', '9041', '6897', '4243', 'f', 'Q', '8785', '907', 'c', '7867', '9397', 'x', '9757', '215', 'r', 'R', 'h', 'Z', 'i', 'G', '505', 'v', '4915', '8735', 'I', 'J', '7195', '5537', '7561']

1561, 9041, 6897, 4243, 6, 17, 8785, 907, 3, 7867, 9397, 24, 9757, 215, 18, 18, 8, 26, 9, 7, 505, 22, 4915, 8735, 9, 10, 7195, 5537, 7561