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.

['R', '4841', '221', 'p', 'K', '8845', '1765', '7773', 'D', '9859', '8781', 'n', 'J', 's', 'N', '221', '6879', '1257', 'a', 'O', '393', '7189']
18, 4841, 221, 16, 11, 8845, 1765, 7773, 4, 9859, 8781, 14, 10, 19, 14, 221, 6879, 1257, 1, 15, 393, 7189

['I', '2095', 'L', 'Z', '7277', 'n', 'G', '1225', 'E', 'y', '6103', '579', 'o', '2513', 'L', '9385', 'y', 'p', '3547', '8123', '8471', '6067', 'p', '8293', 'U', '345', '5503', 'A', 'J']
9, 2095, 12, 26, 7277, 14, 7, 1225, 5, 25, 6103, 579, 15, 2513, 12, 9385, 25, 16, 3547, 8123, 8471, 6067, 16, 8293, 21, 345, 5503, 1, 10

['F', '6083', '2855', 's', 'f', '917', '9037', '3111', 'Y', '4349', '4829', '1369', '5615', '8095', '3357', '2551', 'N', 'j', '9809', '1573', '101', 'L', 'N']

6, 6083, 2855, 19, 6, 917, 9037, 3111, 25, 4349, 4829, 1369, 5615, 8095, 3357, 2551, 14, 10, 9809, 1573, 101, 12, 14