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: ['n', 'P', '5447', '3011', '7233', '6201', 'i', 'b', '3295', '6935', '4089', 'I', '575', 'M', 'S', '1785', '4653', '3637', '5807', '4653', 'V', '2261', '6479', '2625', 'U', '961', '6451', 'N', '6575', 'X', 'X', '4165', '9693', 'X', 'R']

14, 16, 5447, 3011, 7233, 6201, 9, 2, 3295, 6935, 4089, 9, 575, 13, 19, 1785, 4653, 3637, 5807, 4653, 22, 2261, 6479, 2625, 21, 961, 6451, 14, 6575, 24, 24, 4165, 9693, 24, 18