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: ['1745', '1687', 'o', '4195', 'u', '2743', 'g', '5713', 'f', 'G', 'O', '9753', '4317', 'A', '1099', '4657', '7859', 'p', 'f', '6753', '5885', 'Q', '6973', 'k', 'Z', 'p', 'z', '8097', 'i', '5567', '7915', 's', '9183', '549', 'j', '5445', 'P', '2581', '1143', '11']

1745, 1687, 15, 4195, 21, 2743, 7, 5713, 6, 7, 15, 9753, 4317, 1, 1099, 4657, 7859, 16, 6, 6753, 5885, 17, 6973, 11, 26, 16, 26, 8097, 9, 5567, 7915, 19, 9183, 549, 10, 5445, 16, 2581, 1143, 11