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: ['g', 'a', '5149', 'O', '311', '1123', '3947', '4965', 'I', 'e', '6009', 'i', 'F', '3019', '5429', 'G', '4339', 'k', '2727', 'k', 'x', 'F', 'q', 'x', '2281']

7, 1, 5149, 15, 311, 1123, 3947, 4965, 9, 5, 6009, 9, 6, 3019, 5429, 7, 4339, 11, 2727, 11, 24, 6, 17, 24, 2281