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: ['W', 'A', 'K', 'v', 'Z', '3015', 'X', '2285', '3825', '2391', '9071', '7745', '1359', '5281', 'M', 'f', '1091', 'Y', 'v', '9923', 'X', 'G', '1117', 'u', 'd', '2169', '6295', '5073', '6519', 'q', 'f', 'x', '9551', '9521', 't', '7991', 'Y']

23, 1, 11, 22, 26, 3015, 24, 2285, 3825, 2391, 9071, 7745, 1359, 5281, 13, 6, 1091, 25, 22, 9923, 24, 7, 1117, 21, 4, 2169, 6295, 5073, 6519, 17, 6, 24, 9551, 9521, 20, 7991, 25