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.

['7087', '9489', 'z', 'H', '2929', '7139', 'O', '8295', '1693', '9641', 'w', 'F', 'R', 'Y']
7087, 9489, 26, 8, 2929, 7139, 15, 8295, 1693, 9641, 23, 6, 18, 25

['6523', 'v', '9191', 'I', '6937', 'y', '5583', '8449', '1989', '1761', '4493', '4803', 'x', 'e']
6523, 22, 9191, 9, 6937, 25, 5583, 8449, 1989, 1761, 4493, 4803, 24, 5

['9825', '1463', 'O', '1705', 'x', 'X', 'T', 'h', 'O', 'p', '367', '5979']

9825, 1463, 15, 1705, 24, 24, 20, 8, 15, 16, 367, 5979