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: ['1067', 'G', '7563', 'i', 't', '1323', '7625', '3137', '7565', 'c', '6677', '715', 'l', '1615', '8599', 'I', 'b', 'A', 'r', 'J', '6463', 'V', '8681', '5749', 'D', 'M', '4893', 'A', '4735', '5891']

1067, 7, 7563, 9, 20, 1323, 7625, 3137, 7565, 3, 6677, 715, 12, 1615, 8599, 9, 2, 1, 18, 10, 6463, 22, 8681, 5749, 4, 13, 4893, 1, 4735, 5891