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: ['1235', '1959', 'B', 'f', '8231', '969', 'X', '7541', '7095', '4767', '1313', '2007', 'm', '4411', 'E', 'C', '7767', 'V', 'o', '1005', '9091', '1603', 'q', '6027', 'c', '2407', '581', 'm', 'G', 'E', 'Z', '3969', '967', '8503', 'r', 'a']

1235, 1959, 2, 6, 8231, 969, 24, 7541, 7095, 4767, 1313, 2007, 13, 4411, 5, 3, 7767, 22, 15, 1005, 9091, 1603, 17, 6027, 3, 2407, 581, 13, 7, 5, 26, 3969, 967, 8503, 18, 1