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: ['97', '2285', '8505', '2399', '5343', '6787', 'P', '6773', 'Q', 'W', 't', 'J', 'p', 'P', 'p']

97, 2285, 8505, 2399, 5343, 6787, 16, 6773, 17, 23, 20, 10, 16, 16, 16