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: ['z', '755', 'K', 'e', '7417', '1801', '5293', 'c', '2829', '7027', '5563', '3691', '4909', '4777', 'r', '3061', '6611', 'O', '215', 'P', '1395', 't', '9357', 'S', '9263', 'Z', '3165', 'Q', 'D', '5759', 'D', 'Y', 'l', 'w', 'y', '8713', '789', 't', '4907', 'M']

26, 755, 11, 5, 7417, 1801, 5293, 3, 2829, 7027, 5563, 3691, 4909, 4777, 18, 3061, 6611, 15, 215, 16, 1395, 20, 9357, 19, 9263, 26, 3165, 17, 4, 5759, 4, 25, 12, 23, 25, 8713, 789, 20, 4907, 13