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: ['a', '3105', '1321', '7035', 'B', 'z', '7297', 's', '9107', '7389', 'E', '9239', 'l', 'n', 'E', '8255', 'h', '4269', 't', 'k', 'k', 'P', 'W', 'w', '3267', '4753', '6429', '7191', '6001', 'M', 'J', 'k', '5023']

SOLUTION: 1, 3105, 1321, 7035, 2, 26, 7297, 19, 9107, 7389, 5, 9239, 12, 14, 5, 8255, 8, 4269, 20, 11, 11, 16, 23, 23, 3267, 4753, 6429, 7191, 6001, 13, 10, 11, 5023

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: ['7121', 'R', 'j', '7337', 'm', 'V', 'H', '4863', 'L', '5909', 'x', '2517', '9263', '6043', '4539', 'K']

SOLUTION:
7121, 18, 10, 7337, 13, 22, 8, 4863, 12, 5909, 24, 2517, 9263, 6043, 4539, 11