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: ['y', 'L', '1587', '8235', '4495', '2811', 'J', '4389', 'g', '3171', '2569', 'R', '6057', '6261', 'g', '1081', 'I', '4487', '6809', 'p', 'm', '5991', '625']

SOLUTION: 25, 12, 1587, 8235, 4495, 2811, 10, 4389, 7, 3171, 2569, 18, 6057, 6261, 7, 1081, 9, 4487, 6809, 16, 13, 5991, 625

PROBLEM: ['t', '5153', 'I', '5033', 'W', 'D', 'R', '3547', 'p', '269', 'J', 'a', 'O', 'L', '8845', 'E', 'Z', '1983', '3045']

SOLUTION: 20, 5153, 9, 5033, 23, 4, 18, 3547, 16, 269, 10, 1, 15, 12, 8845, 5, 26, 1983, 3045

PROBLEM: ['p', 'O', 'B', '5579', '2155', 'w', '3361', '963', 'Z', 'l', '8667', '8669', 'l', '4255', '3439', 'Z', '4817', '5355', '3291', '9327', 'U', 'D', 'W', '4009']

SOLUTION:
16, 15, 2, 5579, 2155, 23, 3361, 963, 26, 12, 8667, 8669, 12, 4255, 3439, 26, 4817, 5355, 3291, 9327, 21, 4, 23, 4009