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: ['9627', '7739', '1517', 'z', '6571', 'f', '103', 'c', 'P', 'K', 'T', 'T', '2119', 'E', '4007', '9791', '8129', '3423', 'h', 'y', 'l', '4351', '5815', '4199', 'p', '2899', '6013', 'o', '9231', '4803', 'K', '1227', '4611', 'W', 'Y', 'A']

9627, 7739, 1517, 26, 6571, 6, 103, 3, 16, 11, 20, 20, 2119, 5, 4007, 9791, 8129, 3423, 8, 25, 12, 4351, 5815, 4199, 16, 2899, 6013, 15, 9231, 4803, 11, 1227, 4611, 23, 25, 1