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: ['6895', 'a', 'T', 'w', '2225', 'E', 'H', '9065', '4217', 'Z', '5247', 'm', '5789', 'g', '4085', '5535', '4557', '2289', 'A', '9107', 'b', '6223', 'S']

6895, 1, 20, 23, 2225, 5, 8, 9065, 4217, 26, 5247, 13, 5789, 7, 4085, 5535, 4557, 2289, 1, 9107, 2, 6223, 19