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: ['7577', 'y', '5067', '3757', '5979', 't', 'N', 'p', '6313', 'y', '1297', 'y']

7577, 25, 5067, 3757, 5979, 20, 14, 16, 6313, 25, 1297, 25