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', '9797', 'E']

SOLUTION: 6, 9797, 5

PROBLEM: ['1949', '8001', 'N', 'v', 'o', '2579', 'a', 'P', 'G', 'J', 'u', 'h', '5117', '5709', 'q', 'Y', '4671', '7933', 'U', 'z', 'u', 'm', '7171', '7561', 'z', '9533', 'j', '7683']

SOLUTION: 1949, 8001, 14, 22, 15, 2579, 1, 16, 7, 10, 21, 8, 5117, 5709, 17, 25, 4671, 7933, 21, 26, 21, 13, 7171, 7561, 26, 9533, 10, 7683

PROBLEM: ['T', 'x', '9203', 'R', '5075', 'F', '6909', 'o', 'O', 'd', '7507', '1433', '531', 'y', '9711', 'K', 'H', 'Q', 'A', 'q', 'D', 'F', '2219', '2695', 's', '5797', 'W', 'z']

SOLUTION:
20, 24, 9203, 18, 5075, 6, 6909, 15, 15, 4, 7507, 1433, 531, 25, 9711, 11, 8, 17, 1, 17, 4, 6, 2219, 2695, 19, 5797, 23, 26