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: ['U', 'O', '5627', '2927', 'j', '4987', 'd', 'e', 'o', '5955', '9035', 'B', '8265', '8961', '1077', '8613', 'D', '9067', '7377', 'Z', 'j', '6521', 'D', 'g', '7579', 'v', 'V', 'x', 'n', 'q', '7925', 'M']

21, 15, 5627, 2927, 10, 4987, 4, 5, 15, 5955, 9035, 2, 8265, 8961, 1077, 8613, 4, 9067, 7377, 26, 10, 6521, 4, 7, 7579, 22, 22, 24, 14, 17, 7925, 13