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: ['R', 'p', '1303', 'i', '6625', 'Y', 'K', 'a', '2167', 'i', 'w', '9267', '2297', 'j', '7809']

18, 16, 1303, 9, 6625, 25, 11, 1, 2167, 9, 23, 9267, 2297, 10, 7809