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: ['C', '6393', '249', 'Y', 'v', 'Y', '4105', 't', '3259', 't', 'F', '7979', '1705', 'g', '9483', 'i', '7103', 'e', 'Q', 'x', '5905', '3831', 'F', 'c', 'B', '5175', '333', '6331', 'n', '7659', '7427', 'd', 'G', '951', 'X', 'e', 'V', 'O', 'X', '7863']

3, 6393, 249, 25, 22, 25, 4105, 20, 3259, 20, 6, 7979, 1705, 7, 9483, 9, 7103, 5, 17, 24, 5905, 3831, 6, 3, 2, 5175, 333, 6331, 14, 7659, 7427, 4, 7, 951, 24, 5, 22, 15, 24, 7863