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: ['1817', 'V', '5189', 'l', '8313', '1377', '7375', 'P', 'R', 'q']

1817, 22, 5189, 12, 8313, 1377, 7375, 16, 18, 17