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: ['c', 'e', '8741', 'F', 'O', '407', '4435', '1887', 'O', '1193', '1821', '8135', '6717', 't', 'J', '6767', '639', 'q', '4145', '85', '3571', 'L', '2501', 'Y']

SOLUTION: 3, 5, 8741, 6, 15, 407, 4435, 1887, 15, 1193, 1821, 8135, 6717, 20, 10, 6767, 639, 17, 4145, 85, 3571, 12, 2501, 25

PROBLEM: ['r', 'E', '5611', '5407', '9297', '9563', 'C', 'd', 'D', 'W', '9751', '8139', 'S', '4437', '2331', '2487', 'r', '5649', '5099', '1255', '5865', 'Y', '1477', '1939', '9525', '6353', '7327', '5043', '2837', 'N', 't', 'R', 'R', 'T', 'Z', '353', '7545', 'V', '9287', '8973']

SOLUTION: 18, 5, 5611, 5407, 9297, 9563, 3, 4, 4, 23, 9751, 8139, 19, 4437, 2331, 2487, 18, 5649, 5099, 1255, 5865, 25, 1477, 1939, 9525, 6353, 7327, 5043, 2837, 14, 20, 18, 18, 20, 26, 353, 7545, 22, 9287, 8973

PROBLEM: ['H', '2533', 'U', '6299', '9655', '2365', '9139', '6159', '6523', 'j', '5653', '9785', 'C']

SOLUTION:
8, 2533, 21, 6299, 9655, 2365, 9139, 6159, 6523, 10, 5653, 9785, 3