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.

['3515', '5271', '4907', '4935', '7597', '5125', 'g', '8455', 'j', 'Y', '4277', '9577', 'W', '5615', 'u', 'r', '5171']
3515, 5271, 4907, 4935, 7597, 5125, 7, 8455, 10, 25, 4277, 9577, 23, 5615, 21, 18, 5171

['R', '5811', '8603', '8417', 'z', 'F', '3247', 'E', '1411', '6897', 'K', 'V', '7271', '1243', '5747', 'y', '5453']
18, 5811, 8603, 8417, 26, 6, 3247, 5, 1411, 6897, 11, 22, 7271, 1243, 5747, 25, 5453

['J', '4851', 'G', '4837', '259', '5003', 'A', '3813', 'u', '1907', 'l', '6739', 'X', '7399', '7001', '3355', '6583', 'a', '7125', 'H', '8769', '7987', 'x', 'S', '1737', 'a', '2043', '107', 'T', 'O', 'd', '5555', '5723', '6293', 'e', 'w']

10, 4851, 7, 4837, 259, 5003, 1, 3813, 21, 1907, 12, 6739, 24, 7399, 7001, 3355, 6583, 1, 7125, 8, 8769, 7987, 24, 19, 1737, 1, 2043, 107, 20, 15, 4, 5555, 5723, 6293, 5, 23