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: ['5151', '8663', '4373', 'L', '5491', '123', 'l', 'E', 'b', '3047', 'o']

SOLUTION: 5151, 8663, 4373, 12, 5491, 123, 12, 5, 2, 3047, 15

PROBLEM: ['1279', 'q', '2833', '4607', 'O', '4037', '9243', 'A', '8039', '895', '725', 'Q', 'L', 'F', 'p', 'T', 'u', 'X', 'o', 'n', 'e', '4957']

SOLUTION:
1279, 17, 2833, 4607, 15, 4037, 9243, 1, 8039, 895, 725, 17, 12, 6, 16, 20, 21, 24, 15, 14, 5, 4957