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: ['6785', 'C', 'V', '1957', 'b', 'n', '7477', 'k', 'Y', '9101', '7705', 'H', '6331', '5845', 'o', 'c', '2183', '2975', 'h', 'F', 'N', 'W', '303', '1593', 'a', '6411', 'F', '8523', '7541', 'R', 'm', '2265', 'I']

6785, 3, 22, 1957, 2, 14, 7477, 11, 25, 9101, 7705, 8, 6331, 5845, 15, 3, 2183, 2975, 8, 6, 14, 23, 303, 1593, 1, 6411, 6, 8523, 7541, 18, 13, 2265, 9