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: ['2729', 'J', 'b', 'A', 'h', '4321', '2383', '7515', '5161', 'c', 'c', 'T']

2729, 10, 2, 1, 8, 4321, 2383, 7515, 5161, 3, 3, 20