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: ['R', 'i', '233', 'k', '4347', 'E', 'n', 'l', '9189', '3595', '3985', '3795']

18, 9, 233, 11, 4347, 5, 14, 12, 9189, 3595, 3985, 3795