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: ['d', '9675', '7031', 'H', '869', 'F', '9523', '1673', 'E', 'A', '6893', 'D', 's', 'U', 't', '3261', '8545', 'l', '7113', '7733', 'o', '4685', '2555', '9219', '6341', '8671', '2067', '5679', 'H', 'H', '9169', 'c', 'a', '5449', 'o', 'Q', 'f', 'n']

4, 9675, 7031, 8, 869, 6, 9523, 1673, 5, 1, 6893, 4, 19, 21, 20, 3261, 8545, 12, 7113, 7733, 15, 4685, 2555, 9219, 6341, 8671, 2067, 5679, 8, 8, 9169, 3, 1, 5449, 15, 17, 6, 14