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', 'c', '9895', '7055', '175', 'E', '9949', '8835', 'J', 'y', '4539', '9945', '7497', 'M', '9615', 'I', 'Q', '4705', '5943', '8745', 'Z', 'B']

8, 3, 9895, 7055, 175, 5, 9949, 8835, 10, 25, 4539, 9945, 7497, 13, 9615, 9, 17, 4705, 5943, 8745, 26, 2