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: ['7895', '4405', 'P', 'N', 'U', '8715', '9703', '6543', '437', '27', 'F', 'd', 'f', 'b', '9097', 'x', 'P', 'Y', 't', '8847', 'W', '3551', '5031', '4485', '5129', '3317', '3409', '7017', '2049']

7895, 4405, 16, 14, 21, 8715, 9703, 6543, 437, 27, 6, 4, 6, 2, 9097, 24, 16, 25, 20, 8847, 23, 3551, 5031, 4485, 5129, 3317, 3409, 7017, 2049