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: ['J', 'v', '7271', '3809', '1', '4677', '9279', '8021', '1431', '2209', 'z', 'D', 'I', '3425', '1881', '2519', '6795', '9007', 'C', '5763', '2869', '923', '8495', 'E', 'e', '2209', '5543', '4743', '655', '3905', 'F', '1579']

10, 22, 7271, 3809, 1, 4677, 9279, 8021, 1431, 2209, 26, 4, 9, 3425, 1881, 2519, 6795, 9007, 3, 5763, 2869, 923, 8495, 5, 5, 2209, 5543, 4743, 655, 3905, 6, 1579