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: ['1005', 'u', '4367', 'q', '545', 'a', '8101', '465', 'Z', '1669', '3881', 'f', 'm', '6067', 'N', '371', 'B', '5787', 'a', 'P', '907', '3169', '1239', 'T', '3529', '8907', 'o', 'C', '3903', 'r', '1079', 'f', '5589', '7163', '3847', '9261', '7063']

1005, 21, 4367, 17, 545, 1, 8101, 465, 26, 1669, 3881, 6, 13, 6067, 14, 371, 2, 5787, 1, 16, 907, 3169, 1239, 20, 3529, 8907, 15, 3, 3903, 18, 1079, 6, 5589, 7163, 3847, 9261, 7063