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: ['J', '4935', 't', '3431', 'c', '8525', 'I', 'P', '3181', 'R', 'W', '7841', 'r', 'c', '8643', 'V', '9139', '9603', '7649', '7897', '6205', '7345', '2291', 'D', 'Q', '641', 'Y', '7249', '2685']

SOLUTION: 10, 4935, 20, 3431, 3, 8525, 9, 16, 3181, 18, 23, 7841, 18, 3, 8643, 22, 9139, 9603, 7649, 7897, 6205, 7345, 2291, 4, 17, 641, 25, 7249, 2685

PROBLEM: ['r', '8349', 'v', 'B', '6385', '6105', '3859', '3535', '8279', 'Z', '4157', 'N']

SOLUTION: 18, 8349, 22, 2, 6385, 6105, 3859, 3535, 8279, 26, 4157, 14

PROBLEM: ['3585', '4473', '6161']

SOLUTION:
3585, 4473, 6161