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: ['q', '3903', '9083', 's', 'n', 'b', 'w', '9325', '9489', '8305', 'c', 't', 'P', 'c', '2479', 'a', '1299', 'Y', 'x']

17, 3903, 9083, 19, 14, 2, 23, 9325, 9489, 8305, 3, 20, 16, 3, 2479, 1, 1299, 25, 24