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: ['E', '275', '3661', '9793', 'x', 'd', 'p', 'P', 'b', '543', 'I', '7165', 'L', '6867', '4591', 'J', 'a', 'r', '2037', 'O', '2143', '6045', '5821', '4723']

SOLUTION: 5, 275, 3661, 9793, 24, 4, 16, 16, 2, 543, 9, 7165, 12, 6867, 4591, 10, 1, 18, 2037, 15, 2143, 6045, 5821, 4723

PROBLEM: ['G', 'P', '9587', '2465', 'C', 'q', 'o']

SOLUTION: 7, 16, 9587, 2465, 3, 17, 15

PROBLEM: ['a', '8069', '5069', '405', '7593', '969', '9107', '4617', 'e', '8567', 'E', 'b', 'k', 'c', 'G', '1317', '7653', 'b', 'E', 'y', 'f', '669', '4069', '1865', 'o', 'a', '8299', 'W', '5131', 'w', '4163', '8683', '7383']

SOLUTION:
1, 8069, 5069, 405, 7593, 969, 9107, 4617, 5, 8567, 5, 2, 11, 3, 7, 1317, 7653, 2, 5, 25, 6, 669, 4069, 1865, 15, 1, 8299, 23, 5131, 23, 4163, 8683, 7383