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: ['f', 'r', '6671', '6965', 'O', '4937', 'o', 'w', '2891', '6529']

SOLUTION: 6, 18, 6671, 6965, 15, 4937, 15, 23, 2891, 6529

PROBLEM: ['s', '7331', '8643', 'z', 'J', '6141', '6597', 'F', '95']

SOLUTION: 19, 7331, 8643, 26, 10, 6141, 6597, 6, 95

PROBLEM: ['1661', '3835', '5435', 'Q', '8431', '5777', 'G', '9015', '3165', 'Y', 'k', 'U', 'J', 'X']

SOLUTION:
1661, 3835, 5435, 17, 8431, 5777, 7, 9015, 3165, 25, 11, 21, 10, 24