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: ['d', 'T', 'z', 'h', '4985', '2347', '941', 'q', '2131', '7635', '4401', '1319', 'z', 's', 'x', '4697', '1969', '4829', 'D', '8509', 'K', 's', '7475', 'Z', 'l', 'e', 'K', 'i', '2633', '8293', 'W', 'L', '997', '1019', 'I', '3351', 'Z', 'z', 'T']

4, 20, 26, 8, 4985, 2347, 941, 17, 2131, 7635, 4401, 1319, 26, 19, 24, 4697, 1969, 4829, 4, 8509, 11, 19, 7475, 26, 12, 5, 11, 9, 2633, 8293, 23, 12, 997, 1019, 9, 3351, 26, 26, 20