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', 'I', 'x', 'd', 'm', 'F', '3455', '6341', '2335', '5955', '9673', 'e', '1675', '1905', '7303', 'q', '2313', 'I', '4411', '5693', 'S']

26, 9, 24, 4, 13, 6, 3455, 6341, 2335, 5955, 9673, 5, 1675, 1905, 7303, 17, 2313, 9, 4411, 5693, 19