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: ['8821', 'I', '3227', '663', 'V', 'J', 'V', 'P', 't', 'i', 'l', '1865', 'Y', 'd', '8303', '7', '9511', '4579', '3037', '1901', 'I', 'c', 'e', '3337', 'L', '1345']

8821, 9, 3227, 663, 22, 10, 22, 16, 20, 9, 12, 1865, 25, 4, 8303, 7, 9511, 4579, 3037, 1901, 9, 3, 5, 3337, 12, 1345