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: ['s', 'F', 'S', 'A', '269', 'h', '2117', '3825', '2091', 'Q', '799', '5575', '217', '1181', '8965', 'x', '8123', 'D', 'i', '8715', 's', '1241']

19, 6, 19, 1, 269, 8, 2117, 3825, 2091, 17, 799, 5575, 217, 1181, 8965, 24, 8123, 4, 9, 8715, 19, 1241