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: ['5943', '1773', 'w', 'J', 'z', 'C', '7375', '2911']

5943, 1773, 23, 10, 26, 3, 7375, 2911