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: ['531', '1389', '8435', 'q', 'e', 'i', 'u', 'l', 'l', '6657', 'S', 'C', '665', '3177', '5011', 'c', 't', '9289', 'E', 'U', 'T', '79', '2917', '5077', 'u', '5669', 'J', 'd', 'V', 'Y', 'Z', 'G', 'Q', '4725', '2511', 'D', 'l', 'M']

531, 1389, 8435, 17, 5, 9, 21, 12, 12, 6657, 19, 3, 665, 3177, 5011, 3, 20, 9289, 5, 21, 20, 79, 2917, 5077, 21, 5669, 10, 4, 22, 25, 26, 7, 17, 4725, 2511, 4, 12, 13