TASK 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.
PROBLEM: ['3815', '6963', '1481', 'i', 'N', 'S', '1029', '3511', 'H', 'M', '2701', '8769', '1927']

SOLUTION: 3815, 6963, 1481, 9, 14, 19, 1029, 3511, 8, 13, 2701, 8769, 1927

PROBLEM: ['1579', '2991', '5717', 'w', 'Y', '5025', 'w', '7485', '4201', 'K', 'z', '8587', '3981', 'E', 'Z', '8635', '4367', 'r', 'w', '2685', 'Q', '4253', '1905', '9899', 'I', '3409', 'K', '3411', 'J', '451', 'v', '9191']

SOLUTION: 1579, 2991, 5717, 23, 25, 5025, 23, 7485, 4201, 11, 26, 8587, 3981, 5, 26, 8635, 4367, 18, 23, 2685, 17, 4253, 1905, 9899, 9, 3409, 11, 3411, 10, 451, 22, 9191

PROBLEM: ['6183', 'H', '9875']

SOLUTION:
6183, 8, 9875