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: ['9845', '3521', '5439', '1941', '1503', '225', 'Q', 'x', 't', 'j', 'd', '6239', 'A', '2533', 'q', 'l', '4087', 'W', '7349', '7921', '1685', '3005', 'h']

9845, 3521, 5439, 1941, 1503, 225, 17, 24, 20, 10, 4, 6239, 1, 2533, 17, 12, 4087, 23, 7349, 7921, 1685, 3005, 8