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: ['1147', '883', 'c', '1927', 'a', 'N', '7343', 'P', '9803', 'C', '8785']

1147, 883, 3, 1927, 1, 14, 7343, 16, 9803, 3, 8785