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', 'm', '8395', '1969', '2417', '2649', '7723', '3629', '4783', 'p', 'Z', 'a', 'c', '9647', 'S', '6617', 'v', 'X', 't', '6349', '5657', 'J', '3111', 'l', 'J', 'j', 'u', 'L', 'E', 'N', 'h', '2533']

17, 13, 8395, 1969, 2417, 2649, 7723, 3629, 4783, 16, 26, 1, 3, 9647, 19, 6617, 22, 24, 20, 6349, 5657, 10, 3111, 12, 10, 10, 21, 12, 5, 14, 8, 2533