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: ['1469', '4079', '5811', '6219', '9763', '4277', 'N', '5837', 'S', '17', '4355', '4855', '8851', 'U', 'V', 'd', 'c', '7409', 'r', 'Y', 'h', 's', '3971', '3527']

1469, 4079, 5811, 6219, 9763, 4277, 14, 5837, 19, 17, 4355, 4855, 8851, 21, 22, 4, 3, 7409, 18, 25, 8, 19, 3971, 3527