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: ['T', 'a', 'I', 'b', 'L', '9313', '7459', '1155', 'k', 'c', '9553', '2989', '441', '7345', '7563', '6283', '1617', 'P', '4947', '3255', '9773', 'l', 'G', '4847', '5129', 'b', '1393', '9853', 'K', '125', 'Z', '2945', '9117']

20, 1, 9, 2, 12, 9313, 7459, 1155, 11, 3, 9553, 2989, 441, 7345, 7563, 6283, 1617, 16, 4947, 3255, 9773, 12, 7, 4847, 5129, 2, 1393, 9853, 11, 125, 26, 2945, 9117