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: ['3895', 'G', 'e', 'Y', 's', '3817', 'D', 'u', 'X', 'U', '7387', 'L', '7147', '19', '9961', 'J', '7761', '8423', '8509', 'o', 'p', '7869', 'M', 'q', 'B', 'c', 'n', 'w', 'o', 'z', '1217']

3895, 7, 5, 25, 19, 3817, 4, 21, 24, 21, 7387, 12, 7147, 19, 9961, 10, 7761, 8423, 8509, 15, 16, 7869, 13, 17, 2, 3, 14, 23, 15, 26, 1217