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: ['1029', '1929', 'w', '3417', '4573', '7069', '9477', '1845', '2445', '1049', 'r', 'n', 'i', 's', '3869', 'D', 'P', 'w', 'T', '5131', 'p', 'O', '7641', '7', 'l', '9289', 'k', 'Z', 'x', 'X', 'a', '7235', '235', '7979', '985', '4763']

1029, 1929, 23, 3417, 4573, 7069, 9477, 1845, 2445, 1049, 18, 14, 9, 19, 3869, 4, 16, 23, 20, 5131, 16, 15, 7641, 7, 12, 9289, 11, 26, 24, 24, 1, 7235, 235, 7979, 985, 4763