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: ['c', 'a', '3803', 'p', '4967', '1779', '8395', '7399', 'G', 'l', 'w', 'H', 'F', '5019', '6421', 'S', 'y', '7797', '6957', 'R', '5661', 'I', 'p']

SOLUTION: 3, 1, 3803, 16, 4967, 1779, 8395, 7399, 7, 12, 23, 8, 6, 5019, 6421, 19, 25, 7797, 6957, 18, 5661, 9, 16

PROBLEM: ['b', '7621', '8621', 'p', 'O', '1961', '9275', 'F', 'T', 'w', '9143', 'T', '9715', 'K', '237', 'o', '1183', '1163', 'O', '1803', 'u', 'W', 'd', 'E', 'c', 'z', '8349', '1673', '1915', '1497', 'g', 'D', '9995', '3891', '2029', '8911', 'b', '7891', '1757', 'r']

SOLUTION: 2, 7621, 8621, 16, 15, 1961, 9275, 6, 20, 23, 9143, 20, 9715, 11, 237, 15, 1183, 1163, 15, 1803, 21, 23, 4, 5, 3, 26, 8349, 1673, 1915, 1497, 7, 4, 9995, 3891, 2029, 8911, 2, 7891, 1757, 18

PROBLEM: ['D', '2451', 'c', '8467', 'S', '7951', '8645', 'V', 'a', 'm', 'Q', '85', '445', '1547', '897', 'g', '8635', 'm', '2431', '305', 'J', 'w', 'u', '4471']

SOLUTION:
4, 2451, 3, 8467, 19, 7951, 8645, 22, 1, 13, 17, 85, 445, 1547, 897, 7, 8635, 13, 2431, 305, 10, 23, 21, 4471