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: ['T', 'o', '3313', 'q', '5377', 'G', '21', 'w', 'D', 'U', 'D', '441', 'e', 'R', 'E', 'n', '1933', '7369', '8537', 'o', 'z', 'S', 'b', 'm', '4613', '8471', '1307']

20, 15, 3313, 17, 5377, 7, 21, 23, 4, 21, 4, 441, 5, 18, 5, 14, 1933, 7369, 8537, 15, 26, 19, 2, 13, 4613, 8471, 1307