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: ['7349', '2503', 'e', 'o', '3589', 'G', '5391', '6967', 'I', '2217']

7349, 2503, 5, 15, 3589, 7, 5391, 6967, 9, 2217