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: ['N', '501', 'f', '6495', 'H', '6325', '801', '4749', '4099', 'E', 'T', '4553', '4997', '769', 'M', 'F', '4309', '239', '33', 'i', 'o', 'm', '2923', 'b', '4841', '6931', 'w', 'S', 'R']

14, 501, 6, 6495, 8, 6325, 801, 4749, 4099, 5, 20, 4553, 4997, 769, 13, 6, 4309, 239, 33, 9, 15, 13, 2923, 2, 4841, 6931, 23, 19, 18