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: ['1785', 'L', '3163', 'u', 'c', 'r', '1573', '8129', 'w', 'X', '789', 'n', 'x', 'K', 'K', 'H', '8985', '4147', 'X', 'O', '327', '4585', 'O', 'n', '4317', 'o', '4351', '9859']

1785, 12, 3163, 21, 3, 18, 1573, 8129, 23, 24, 789, 14, 24, 11, 11, 8, 8985, 4147, 24, 15, 327, 4585, 15, 14, 4317, 15, 4351, 9859