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.

['4599', 'V', '2005', 'k']
4599, 22, 2005, 11

['E', '5573', '7669', '6989', 'a', '731', '7747', 'U', '6599', '549', 'd', '6193', 'y', '4005', '7097', 'C', '5707', '3791', '9671']
5, 5573, 7669, 6989, 1, 731, 7747, 21, 6599, 549, 4, 6193, 25, 4005, 7097, 3, 5707, 3791, 9671

['7281', 'e', '8105', '3741', 'R', 't', 'U', 'V', '8747', 'p', 'r', '3363', '8011', 'v', 's', 'H', '5413', 'M']

7281, 5, 8105, 3741, 18, 20, 21, 22, 8747, 16, 18, 3363, 8011, 22, 19, 8, 5413, 13