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: ['9135', '2437', '7349', '1653', 'd', '8415', 'x', 'M', 'f', 'S', 'V', '4679', 'o', 'v', 'p', 'E', 'e', '3279', 'Y', '1525']

9135, 2437, 7349, 1653, 4, 8415, 24, 13, 6, 19, 22, 4679, 15, 22, 16, 5, 5, 3279, 25, 1525