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: ['T', '8895', 'c', 'R', 'k', 'S', 'B', '1633', 'Q', 'o', '5211', '6885', 'R', 'n']

20, 8895, 3, 18, 11, 19, 2, 1633, 17, 15, 5211, 6885, 18, 14