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: ['v', 'N', 'A', 'g', '1755', '3411', 'C', '9653', 'f', '4989', '5657', 't', 'W', '3091', 'Y', 'n', 'i', 'S', '91', '5151', '7843', 'S', '4197', 'h', '7951', 'b', '2611', 'V', 'u', '1815', '5911']

22, 14, 1, 7, 1755, 3411, 3, 9653, 6, 4989, 5657, 20, 23, 3091, 25, 14, 9, 19, 91, 5151, 7843, 19, 4197, 8, 7951, 2, 2611, 22, 21, 1815, 5911