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', '9753', '6805', '3121', '2395', '2583', 'x', '2963', '9131', 'c']

17, 9753, 6805, 3121, 2395, 2583, 24, 2963, 9131, 3