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.

['8407', 'L', 'p', '5585', 'b', '9035', 's', '1007', '9889', '9993', 'H']
8407, 12, 16, 5585, 2, 9035, 19, 1007, 9889, 9993, 8

['1183', '4279', 'f', 'I', 'I', '3533', '891', 'z', '5947', '8717', '6875', '7121', '3503', 'l', '1909', 'E', '6613', '5571', 's', 'R', 'e']
1183, 4279, 6, 9, 9, 3533, 891, 26, 5947, 8717, 6875, 7121, 3503, 12, 1909, 5, 6613, 5571, 19, 18, 5

['R', 'D', 'I', '2531', '7409', 'd', 'a', 'Z', '2501', 'h', 't', 'u', '3141', 'w']

18, 4, 9, 2531, 7409, 4, 1, 26, 2501, 8, 20, 21, 3141, 23