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.

['4793', 'v', 'k', '1847', 'h', 'V', 't', '1459', '529', 'a', '783', 'C', 'p', 'W', 'J', 'c', '3517', '9395', 'x', 'O', 'j', '9079', '5789', '449', 'I', 'f', '1121', '9829', 'l']
4793, 22, 11, 1847, 8, 22, 20, 1459, 529, 1, 783, 3, 16, 23, 10, 3, 3517, 9395, 24, 15, 10, 9079, 5789, 449, 9, 6, 1121, 9829, 12