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: ['f', '1287', '4749', 'Z', 'N', 'P', '5427', '3573', '4883', '6355', 'B', '2901', 'A', 'p', 'a', 'c', '1327', 'V', 'F', '873', '5635', '7393']

SOLUTION: 6, 1287, 4749, 26, 14, 16, 5427, 3573, 4883, 6355, 2, 2901, 1, 16, 1, 3, 1327, 22, 6, 873, 5635, 7393

PROBLEM: ['t', '4155', '5445', 'Y', 'j', 'c', '2477', 'z', 'W', 'k', 'k', '5561', 'T', '8249', 'm']

SOLUTION: 20, 4155, 5445, 25, 10, 3, 2477, 26, 23, 11, 11, 5561, 20, 8249, 13

PROBLEM: ['a', '3105', '1321', '7035', 'B', 'z', '7297', 's', '9107', '7389', 'E', '9239', 'l', 'n', 'E', '8255', 'h', '4269', 't', 'k', 'k', 'P', 'W', 'w', '3267', '4753', '6429', '7191', '6001', 'M', 'J', 'k', '5023']

SOLUTION:
1, 3105, 1321, 7035, 2, 26, 7297, 19, 9107, 7389, 5, 9239, 12, 14, 5, 8255, 8, 4269, 20, 11, 11, 16, 23, 23, 3267, 4753, 6429, 7191, 6001, 13, 10, 11, 5023