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: ['3765', '519', 'Z', '2677', '2207', 'w', '7463', '8817', 'J', 'd', '5019', 'u', 'o', '7317', '2305', 'H', 'b', 'K', 'j', 'f']

3765, 519, 26, 2677, 2207, 23, 7463, 8817, 10, 4, 5019, 21, 15, 7317, 2305, 8, 2, 11, 10, 6