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: ['6037', '2451', 'O', '9241', '957', '7173', 'c', '8353', 'n', '9223', 'B', '7409', 'A', 'z', '2887', '4763', 'i', 'Y', 'p', '7571', '1175', 'b', '6311', '9535', '4731', 'I', '4715', 'S', 'f', '9203', '3181', '8421', 'q', '1833', '3397']

6037, 2451, 15, 9241, 957, 7173, 3, 8353, 14, 9223, 2, 7409, 1, 26, 2887, 4763, 9, 25, 16, 7571, 1175, 2, 6311, 9535, 4731, 9, 4715, 19, 6, 9203, 3181, 8421, 17, 1833, 3397