Definition: 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.
Input: ['Q', '2233', 'z', 'k', '261', '3739', 'g', '3737', '3853', 'B', 'q', 'U', 'q', '4001', '1769', 'J', 'L', 'F', 'u', '27', '8287', '4083', '187', '3219', '3911', '7789', 'M', '6449', '9553', 't', '4739', '8523', 'q', 'T', 'x', 'f', 'I', '6001', '9691', '903']

17, 2233, 26, 11, 261, 3739, 7, 3737, 3853, 2, 17, 21, 17, 4001, 1769, 10, 12, 6, 21, 27, 8287, 4083, 187, 3219, 3911, 7789, 13, 6449, 9553, 20, 4739, 8523, 17, 20, 24, 6, 9, 6001, 9691, 903