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: ['6611', '5611', 'i', 'z', 'T', '3065', '7687', '8803', 'J', 'A', 'W', 'x', 'A', '3073', 'V', 'W']

6611, 5611, 9, 26, 20, 3065, 7687, 8803, 10, 1, 23, 24, 1, 3073, 22, 23