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: ['3529', '9143', '6619', 'J', 'x', 'g', 'M', '5357', 'r', 'Z', 'C', '2595', 'O', 'H', 'b', 'D', '4465', 'H', 'P', 'y', 'j', '3827', 'j', 'i', '3923', '5087', '4121', 'q', '7385', '4169', 'c', '6259']

3529, 9143, 6619, 10, 24, 7, 13, 5357, 18, 26, 3, 2595, 15, 8, 2, 4, 4465, 8, 16, 25, 10, 3827, 10, 9, 3923, 5087, 4121, 17, 7385, 4169, 3, 6259