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: ['q', 'C', '5849', '8931', 'P', 'i', '7225', 'P', '5919', '7955', '9431']

17, 3, 5849, 8931, 16, 9, 7225, 16, 5919, 7955, 9431