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: ['1203', '455', 'V', 'o', '9507', '4015', 'K', 'd', 'p', 'l', 'm', 'c', 'g', 'g', '7413', '5821', 'v', '9775', 'c', 'p', '5041', '4623', 'M', 'w', '3817', '6707', 'o', '3189', 'e', '8225', '5485', '5813']

1203, 455, 22, 15, 9507, 4015, 11, 4, 16, 12, 13, 3, 7, 7, 7413, 5821, 22, 9775, 3, 16, 5041, 4623, 13, 23, 3817, 6707, 15, 3189, 5, 8225, 5485, 5813