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.

['7949', '8047', 't', '9913', 'd', '8641', 'n', '8383', '7493', '8819', '6981', 'n', '6287', '8685', 'b', '7535']
7949, 8047, 20, 9913, 4, 8641, 14, 8383, 7493, 8819, 6981, 14, 6287, 8685, 2, 7535

['y', '9573', 'j', '6697', '4179', '8985', '8999', 'R', '2585', 'h', 'p', '9407', '9575', '2639', '7655', '4683', 'Y']
25, 9573, 10, 6697, 4179, 8985, 8999, 18, 2585, 8, 16, 9407, 9575, 2639, 7655, 4683, 25

['e', 'y', 'U', 'o', 'K', 'J', '6831', 'W', 'N', 'N', 'k', 'a', '1611', 'y', 'J', 'X', 'Y', 'l', '7701', '2725', '8547', '6433', 'A', '7399', '4627']

5, 25, 21, 15, 11, 10, 6831, 23, 14, 14, 11, 1, 1611, 25, 10, 24, 25, 12, 7701, 2725, 8547, 6433, 1, 7399, 4627