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: ['5113', 'e', 'x', 'U', '8239', '2917', '4807', '727', 'Z', 'a', 'C', '3543', 'G', '3073', '4535', '6467', '7167', '1591', '2679', '5031', '1017', 'K', 'x', '9731', '7417', 'S', '3815', 't', 'E', '417']

5113, 5, 24, 21, 8239, 2917, 4807, 727, 26, 1, 3, 3543, 7, 3073, 4535, 6467, 7167, 1591, 2679, 5031, 1017, 11, 24, 9731, 7417, 19, 3815, 20, 5, 417