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: ['h', '5021', '7395', '4101', 'r', '703', '871', 'S', 'g', 'R', '3871', 'c', '6607', 'i', '7281', 'S', '8021', 'n', '9299', '4509', 'b', 'v', 'G', '9239', 'p']

SOLUTION: 8, 5021, 7395, 4101, 18, 703, 871, 19, 7, 18, 3871, 3, 6607, 9, 7281, 19, 8021, 14, 9299, 4509, 2, 22, 7, 9239, 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: ['o', '7289', '1243', '4737', 'n', '7591', '1221', 'O', 'i', '4677', '8025', 'U', '2889', '425', 'C', 'P', 'q', '5805', 'Q', '6019', 'y', '21', '6265', '5943', 'S', 't', '2963', '3879', 'y', '1029', 'Z', 'c', 'X', 'v', 'c']

SOLUTION:
15, 7289, 1243, 4737, 14, 7591, 1221, 15, 9, 4677, 8025, 21, 2889, 425, 3, 16, 17, 5805, 17, 6019, 25, 21, 6265, 5943, 19, 20, 2963, 3879, 25, 1029, 26, 3, 24, 22, 3