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: ['V', 'E', '689', '6309', 'B', 'G', '4355', '7', 'd', '7693', '5377', 'n', 'S', '7575', 'x', 'E', 'r', '8909', '3443', '9763', '177', 'n', 'J', '3807']

22, 5, 689, 6309, 2, 7, 4355, 7, 4, 7693, 5377, 14, 19, 7575, 24, 5, 18, 8909, 3443, 9763, 177, 14, 10, 3807