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: ['9593', '9143', '9513', '341', '4957', 'W', 'U', '4951', 'P', 'i', 'F', 'q', 'y', '3429', 'k', '5527', 'M']

SOLUTION: 9593, 9143, 9513, 341, 4957, 23, 21, 4951, 16, 9, 6, 17, 25, 3429, 11, 5527, 13

PROBLEM: ['C', 'S', 'C', 'T', '4187', '8575', '405', 'N', '7281']

SOLUTION: 3, 19, 3, 20, 4187, 8575, 405, 14, 7281

PROBLEM: ['A', '2651', 'L', 'X', '7363', 'P', '5937', '9133', 'P', 'y', 'Z', 'L', '7739', '5091', 'N', 'p', 'o', 'h', '5257', '6333', '8353', 'z', 'Y', 'm', 'n', '2121']

SOLUTION:
1, 2651, 12, 24, 7363, 16, 5937, 9133, 16, 25, 26, 12, 7739, 5091, 14, 16, 15, 8, 5257, 6333, 8353, 26, 25, 13, 14, 2121