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: ['7869', 'q', '7887', 'z', 'r', '7069', 'C', '2793', 'N']

SOLUTION: 7869, 17, 7887, 26, 18, 7069, 3, 2793, 14

PROBLEM: ['7127', '6275', '9527', 'l', 'J', '6051', 'k', 'y', 'W', '3467', '4027', '9027', 'R', 'k', 'p', '7191', 'h', 'y']

SOLUTION: 7127, 6275, 9527, 12, 10, 6051, 11, 25, 23, 3467, 4027, 9027, 18, 11, 16, 7191, 8, 25

PROBLEM: ['J', 'h', '1475', '2415', 'V', '4525', 'i', 'M', '8859', '8597', '6589', '8773', '1875']

SOLUTION:
10, 8, 1475, 2415, 22, 4525, 9, 13, 8859, 8597, 6589, 8773, 1875