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: ['F', 'H', 'T', '8815', '655', 'S', 'H', 'N', 'B', '8595', 'o']

6, 8, 20, 8815, 655, 19, 8, 14, 2, 8595, 15