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: ['3619', '943', '2411', '8477', '9539', '7775', 'o', 'y', '79', '5067', '4747', 'K', 'e', '2689', '565', 'c', '4117', '1799', 'K', '3951', '9613', '111', '6331', '655', 'R', 'Y', 'b', '7891', 'd']

3619, 943, 2411, 8477, 9539, 7775, 15, 25, 79, 5067, 4747, 11, 5, 2689, 565, 3, 4117, 1799, 11, 3951, 9613, 111, 6331, 655, 18, 25, 2, 7891, 4