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: ['7015', 'g', '3185', 'r', 's', 'W', '437', '145', 'U', '4559', 'a', 'a', 'Y', '8233', '7881', 'O', 'G', '4765', '9775', '1151', 'w', 'x', '9781', 'j', 'c', 'r', '9233', '6747', '8771', '4651', 'b', 'P', 'K', 'D', 'i', 't', 'r', '9679', '6753', '181']

7015, 7, 3185, 18, 19, 23, 437, 145, 21, 4559, 1, 1, 25, 8233, 7881, 15, 7, 4765, 9775, 1151, 23, 24, 9781, 10, 3, 18, 9233, 6747, 8771, 4651, 2, 16, 11, 4, 9, 20, 18, 9679, 6753, 181