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: ['7565', 'c', '4849', '6873', '6901', 'Q', '4237']

7565, 3, 4849, 6873, 6901, 17, 4237