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: ['q', 'k', '5533', 'u', '4073', '3657', 'R', '6083', '2447', 'z', '7745', '8855', '3103', 'p', 'm', 'R', 'v', 'K', '4219']

17, 11, 5533, 21, 4073, 3657, 18, 6083, 2447, 26, 7745, 8855, 3103, 16, 13, 18, 22, 11, 4219