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.

['J', '6243', 'G', 'V', 'K', '6277', 'c', '9637', 'B', 'i', 'U', '3459', 'L']
10, 6243, 7, 22, 11, 6277, 3, 9637, 2, 9, 21, 3459, 12

['a', '6515', '1185', 'o', '7781', '2213', '6077', '2461', '8771', 'S', 'L', 'P', '9841', 'P', '7851', 's', '6149', 'r', '7129', '3325', 'X', '8229', 'h', 'J', 'Y', '3525', '3915', '8663', 'W', '2323', 'B', 'x', 'd', '4263', 'w', 'o', '4645', 'w']
1, 6515, 1185, 15, 7781, 2213, 6077, 2461, 8771, 19, 12, 16, 9841, 16, 7851, 19, 6149, 18, 7129, 3325, 24, 8229, 8, 10, 25, 3525, 3915, 8663, 23, 2323, 2, 24, 4, 4263, 23, 15, 4645, 23

['333', '7483', 'l', 'x', 'R', 'r', 's', 'B', 'r', '5873', 'W', 'K', '929', '8929', 'V', 'f', '1113', 'm', 'Q', 'B', 'x', 'b', '5317', 'S', '907', 'S']

333, 7483, 12, 24, 18, 18, 19, 2, 18, 5873, 23, 11, 929, 8929, 22, 6, 1113, 13, 17, 2, 24, 2, 5317, 19, 907, 19