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: ['K', 'z', '7579', '7945', 'K', '5633', 'G', '7211', '9855', 'c', '4155']

11, 26, 7579, 7945, 11, 5633, 7, 7211, 9855, 3, 4155