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: ['2673', '5803', 'E', '1855', '29', 'K', 's', '3225', 'u', '951', 'u', 'Y', '2067', 'K', 'c', 'o', '2853', '8039', 't', '1085', 'g', '9135', '8901', '5465', '1059', 's', '4957', 'O', 'v', 'p', '4317', 'J', '3679', '9023', 'Z', '8241', 'B', 'Y', '4517']

2673, 5803, 5, 1855, 29, 11, 19, 3225, 21, 951, 21, 25, 2067, 11, 3, 15, 2853, 8039, 20, 1085, 7, 9135, 8901, 5465, 1059, 19, 4957, 15, 22, 16, 4317, 10, 3679, 9023, 26, 8241, 2, 25, 4517