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: ['c', '2209', '6067', 'o', '6509', '4567', 'k', '5053', 'Y', 'n', 'f', '933', 'c', 'r', 'Q', 'N', '5609', '3273']

3, 2209, 6067, 15, 6509, 4567, 11, 5053, 25, 14, 6, 933, 3, 18, 17, 14, 5609, 3273