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

['1351', 'w', 'U', 'x', 'c', '3935', 'X', 'K', 'D', '8795', '4387', '8133', 'i', '6151', '7309', '5949', 'X', 'i', 'p', 'B', '3815', '5929', 'H', '6693', 'r', '3727', 'm', 'E', '6575', '1377', 'k', 'p']
1351, 23, 21, 24, 3, 3935, 24, 11, 4, 8795, 4387, 8133, 9, 6151, 7309, 5949, 24, 9, 16, 2, 3815, 5929, 8, 6693, 18, 3727, 13, 5, 6575, 1377, 11, 16

['345', '8289', 'N', '8169', 'R', '2647', 'h', 's', 'x', '4713', 'b']

345, 8289, 14, 8169, 18, 2647, 8, 19, 24, 4713, 2