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: ['G', '3445', '2997', 'c', '1787', '8931', '5863', 'V', 'Q', '6171', '4849', '7843', '4879', 'S', '7831', 'f', 'p', '5131', 'L', '6707', 'y', 'J', '9689', 'X', '5683']

7, 3445, 2997, 3, 1787, 8931, 5863, 22, 17, 6171, 4849, 7843, 4879, 19, 7831, 6, 16, 5131, 12, 6707, 25, 10, 9689, 24, 5683