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: ['B', 'i', '2323', '6623', 'c', '2069', 'G', 'P', '4929', '5751', '6729', '2413', 'W', 'R', 'Z', '9619', '7943', 'q', 'r', 'C', 'g', 'l', '2011', 'w']

2, 9, 2323, 6623, 3, 2069, 7, 16, 4929, 5751, 6729, 2413, 23, 18, 26, 9619, 7943, 17, 18, 3, 7, 12, 2011, 23