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: ['T', 'a', 'B', '3407', 'z', 'B', 'f', '4063', '8889', '3125']

SOLUTION: 20, 1, 2, 3407, 26, 2, 6, 4063, 8889, 3125

PROBLEM: ['8081', 'c', '7589', '8335', 'r', '4639', 'V', '4937', 'd', '165', '5371', '8353', 's', 'o', 'A', '2401', 'M', 'T', '9845', '9701', 'p', '3469']

SOLUTION: 8081, 3, 7589, 8335, 18, 4639, 22, 4937, 4, 165, 5371, 8353, 19, 15, 1, 2401, 13, 20, 9845, 9701, 16, 3469

PROBLEM: ['f', '5977', 'Q', 'o', '7887', '5727', '4075', '3035', 'W', '4259', '287', 'i', 'Z', 'u', '7449', '6417', '9969', '1821', 'I', '9313', '1893', 'd', '9817', 'U', 'c', '541', '467', 'J']

SOLUTION:
6, 5977, 17, 15, 7887, 5727, 4075, 3035, 23, 4259, 287, 9, 26, 21, 7449, 6417, 9969, 1821, 9, 9313, 1893, 4, 9817, 21, 3, 541, 467, 10