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', '5907', '2755', '3749', '8899', '4965', '3313', 'h', 'V', '295', 'T', '4527', '451', 'd', 'J', 'z', 'I', 'i', '529', 'k', '395', 'E', 'A', '4265', '8427', '1019', '6805', '2789', '2615', 'Z']

14, 5907, 2755, 3749, 8899, 4965, 3313, 8, 22, 295, 20, 4527, 451, 4, 10, 26, 9, 9, 529, 11, 395, 5, 1, 4265, 8427, 1019, 6805, 2789, 2615, 26