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: ['3965', 'G', '2557', '7453', '2585', '7141', '1331', 'j', 'J', '2781', 'h', '8909', '8533', 'H', '9363', 'B', '545', '9753', '3191', '2797', '1107', 'm', '7937', 'F', '3665', 'f', '6375', 'U', '1049', 'Q', '5727', '979', 'v', '3901']

3965, 7, 2557, 7453, 2585, 7141, 1331, 10, 10, 2781, 8, 8909, 8533, 8, 9363, 2, 545, 9753, 3191, 2797, 1107, 13, 7937, 6, 3665, 6, 6375, 21, 1049, 17, 5727, 979, 22, 3901