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: ['M', '9595', '5447', 'F', 'j', '4505', 'C']

13, 9595, 5447, 6, 10, 4505, 3