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: ['5319', 'G', '6901', '3897', 'D', '7909', 'x', '2723', '9683', 'k', '91', 'P', 'u', '5847', 'X', '2795', 'w', '9953', 'D', 'y', '1401', 'F', '8885', 'V', '7301', 'V', '9073', '7831', '1151', 'z', '1425', '2121', '1395', 't', 'W']

SOLUTION: 5319, 7, 6901, 3897, 4, 7909, 24, 2723, 9683, 11, 91, 16, 21, 5847, 24, 2795, 23, 9953, 4, 25, 1401, 6, 8885, 22, 7301, 22, 9073, 7831, 1151, 26, 1425, 2121, 1395, 20, 23

PROBLEM: ['6523', 'v', '9191', 'I', '6937', 'y', '5583', '8449', '1989', '1761', '4493', '4803', 'x', 'e']

SOLUTION: 6523, 22, 9191, 9, 6937, 25, 5583, 8449, 1989, 1761, 4493, 4803, 24, 5

PROBLEM: ['E', 'u', 'T', '1831', '427', 'x', '6695', '9023', 'L', 'B', '5437', '6875', 'J', 'k', 'P', '2815', 'k', 'g', 'h', '5889', '7455', '7949', 'N']

SOLUTION:
5, 21, 20, 1831, 427, 24, 6695, 9023, 12, 2, 5437, 6875, 10, 11, 16, 2815, 11, 7, 8, 5889, 7455, 7949, 14