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', 'N', '7869', '4041', '1921', 'I', 'R', '8047', 'E', '975', 'N', '4201', 'w', '4367', '1027', '9593', 'c', 'l', '5067']

26, 14, 7869, 4041, 1921, 9, 18, 8047, 5, 975, 14, 4201, 23, 4367, 1027, 9593, 3, 12, 5067