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: ['899', '6077', '7779', '9959', 'B', 'C', 'c', '5977', '9611', 'p', '8013', 'r', '665', 'Z', 'i', '2099', 'w', '4795']

SOLUTION: 899, 6077, 7779, 9959, 2, 3, 3, 5977, 9611, 16, 8013, 18, 665, 26, 9, 2099, 23, 4795

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: ['a', '8765', 'T', '815', '2407', 'j', 'C', 'g', 'M', '1377', 'L', 'm', 'L', '5553', 'Z', 'g', '7403', 'W', 'H', '7521', 'R', '3921', 'I']

SOLUTION:
1, 8765, 20, 815, 2407, 10, 3, 7, 13, 1377, 12, 13, 12, 5553, 26, 7, 7403, 23, 8, 7521, 18, 3921, 9