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: ['8993', '7853', 'c', 'h', 'Z', 'l', 'Q', '4133', '7255', '3703', '8145', '1403', '139', '8043', 'z', 'V', '4845', '3907', '7393', '5643', '301', '4529', '2859', 'C', 'g', '6577', 'q', '8289', '9379', '6769', 'c', 't', 'L']

8993, 7853, 3, 8, 26, 12, 17, 4133, 7255, 3703, 8145, 1403, 139, 8043, 26, 22, 4845, 3907, 7393, 5643, 301, 4529, 2859, 3, 7, 6577, 17, 8289, 9379, 6769, 3, 20, 12