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', '7053', 'N', 'h', '9529', '3199', 'i', 'Z', '8075', 'h', '1965', '313', 'e', '2279', 'K', '9723', 'U', '3537', 'Y', 'b', 'i', '6289', '4387', 'W', 'N', '9423', '1027', '5745', '9229', 'h']

18, 7053, 14, 8, 9529, 3199, 9, 26, 8075, 8, 1965, 313, 5, 2279, 11, 9723, 21, 3537, 25, 2, 9, 6289, 4387, 23, 14, 9423, 1027, 5745, 9229, 8