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: ['d', '903', 'N', 'n', '1959', 'U', 'Z', 'v', 'f', '6207', '4947', '9471', 'v', '481', 'Z', '163']

SOLUTION: 4, 903, 14, 14, 1959, 21, 26, 22, 6, 6207, 4947, 9471, 22, 481, 26, 163

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: ['Q', 'Z', '679', '5469', 'X', '6209', '5667', 'b', 'B', 'm', '6145', 'r', '8115', 'g', 'k', '7537', 'h', '3657', 'a', 'V', '2769', '2339', '8623', 't', '8571', 'J', '4651', 'H', '7869', 'S', 'J', '4025', '2597', 'M', '3255', 'I', 'r', 'A', 'u', '769']

SOLUTION:
17, 26, 679, 5469, 24, 6209, 5667, 2, 2, 13, 6145, 18, 8115, 7, 11, 7537, 8, 3657, 1, 22, 2769, 2339, 8623, 20, 8571, 10, 4651, 8, 7869, 19, 10, 4025, 2597, 13, 3255, 9, 18, 1, 21, 769