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: ['A', '6223', '3689', '4765', '6279', '5993', '7333', '2739', '9149', 't', 'c', '4435', '5079', 'Q', '3621', 'C', '3773', '4311', '4525', 'e', 'P', '2977', 'L', '601', 'i']

1, 6223, 3689, 4765, 6279, 5993, 7333, 2739, 9149, 20, 3, 4435, 5079, 17, 3621, 3, 3773, 4311, 4525, 5, 16, 2977, 12, 601, 9