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: ['F', '4543', 'H', '5941', 'h', 't', 'M', 'z', 'd', 'W', 'W', 'V', 't', '8041', 's', '4971', 'H', 'C', '1561', '3989', '4227', '2067', '2283', 'n', 'z', '1489', '6687', '887', '6083', '593', 'H', '9193', 'V']

6, 4543, 8, 5941, 8, 20, 13, 26, 4, 23, 23, 22, 20, 8041, 19, 4971, 8, 3, 1561, 3989, 4227, 2067, 2283, 14, 26, 1489, 6687, 887, 6083, 593, 8, 9193, 22