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: ['881', 'j', '8761', '1721', 'P', '4079', '2563', '8845', 'a', 'O', 'Z', '159', '7835', 'T', '7437', 't', '6325', 'm', '3133', 'N', 'd', 'T', 'H', '8037', '2717', 'E', '9991', 't', '4219', '8759', '9165', '347', 'v', 'c', 'S', '3641', 'v']

881, 10, 8761, 1721, 16, 4079, 2563, 8845, 1, 15, 26, 159, 7835, 20, 7437, 20, 6325, 13, 3133, 14, 4, 20, 8, 8037, 2717, 5, 9991, 20, 4219, 8759, 9165, 347, 22, 3, 19, 3641, 22