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: ['y', '9055', 'k', '8681', 'q', 's', '3131', '8417', 'q', 'O', '4435', '4757', 'y', '7727', '6143', '9911', 'b', '5565', '6999', 'I', 'U', '6999', '1331', 'I', 'o', 'Z', '9007', 'w', 'R', '9321', '6671', 'O', 'V', 'b', 'I', '8471', 'c', 'M', '8547']

25, 9055, 11, 8681, 17, 19, 3131, 8417, 17, 15, 4435, 4757, 25, 7727, 6143, 9911, 2, 5565, 6999, 9, 21, 6999, 1331, 9, 15, 26, 9007, 23, 18, 9321, 6671, 15, 22, 2, 9, 8471, 3, 13, 8547