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: ['B', 'B', 'Z', 'f', 'D', '7617', 'J', '5995', 'd', '4233', '2773', 'e', 'J', 'y', '8055', '861', '8861', '7207', 'A', 'y', '8791', '63', '7311', '4277', 'g', '1461', 'R', '3441']

2, 2, 26, 6, 4, 7617, 10, 5995, 4, 4233, 2773, 5, 10, 25, 8055, 861, 8861, 7207, 1, 25, 8791, 63, 7311, 4277, 7, 1461, 18, 3441