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: ['h', '3047', 'u', 'A', '5569', '6761', '5521', 'l', '4243', '1937', '7159', '8309', 'j', 'P', '73', 'K', '3367', '1963', 'S', 'Z', 'i', '5135', 'g', '9823', '3147', '6123', 'i', '4305']

8, 3047, 21, 1, 5569, 6761, 5521, 12, 4243, 1937, 7159, 8309, 10, 16, 73, 11, 3367, 1963, 19, 26, 9, 5135, 7, 9823, 3147, 6123, 9, 4305