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.

['A', '785', '1403', '5507', '5833']
1, 785, 1403, 5507, 5833

['u', 'a', '9939', '9353', 'v', 'S', 'l', '981', 'P', 'q', 'M', 'w', '8419']
21, 1, 9939, 9353, 22, 19, 12, 981, 16, 17, 13, 23, 8419

['6839', '7817', 'R', '2107', 'k', 'd', 'd', '881', '9919', '6181', 'Z', 'Q', '7585', '2067']

6839, 7817, 18, 2107, 11, 4, 4, 881, 9919, 6181, 26, 17, 7585, 2067