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: ['7975', '4537', '1151', '1035', '3493', '6909', 'V', 'X', '6989', 'q', 'V', '6179', '4649', '5821', '4717', '4959', '4819', '2355', 'J', 'T', 'g', 'C', '4067']

7975, 4537, 1151, 1035, 3493, 6909, 22, 24, 6989, 17, 22, 6179, 4649, 5821, 4717, 4959, 4819, 2355, 10, 20, 7, 3, 4067